/*
+--------------------------------------------------------------------------+
| Licensed Materials - Property of IBM                                     |
|                                                                          |
| (C) Copyright IBM Corporation 2006-2013                                  |
+--------------------------------------------------------------------------+ 
| This module complies with SQLAlchemy 0.4 and is                          |
| Licensed under the Apache License, Version 2.0 (the "License");          |
| you may not use this file except in compliance with the License.         |
| You may obtain a copy of the License at                                  |
| http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable |
| law or agreed to in writing, software distributed under the License is   |
| distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| KIND, either express or implied. See the License for the specific        |
| language governing permissions and limitations under the License.        |
+--------------------------------------------------------------------------+
| Authors: Manas Dadarkar, Salvador Ledezma, Sushant Koduru,               |
|   Lynh Nguyen, Kanchana Padmanabhan, Dan Scott, Helmut Tessarek,         |
|   Sam Ruby, Kellen Bombardier, Tony Cairns, Abhigyan Agrawal,            |
|   Tarun Pasrija, Rahul Priyadarshi                                       |
+--------------------------------------------------------------------------+
*/

#define MODULE_RELEASE "2.0.5.1"

#include <Python.h>
#include <datetime.h>
#include "ibm_db.h"
#include <ctype.h>
#ifdef _WIN32
#include <windows.h>
#else
#include <dlfcn.h>
#endif

/* True global resources - no need for thread safety here */
static struct _ibm_db_globals *ibm_db_globals;

static void _python_ibm_db_check_sql_errors( SQLHANDLE handle, SQLSMALLINT hType, int rc, int cpy_to_global, char* ret_str, int API, SQLSMALLINT recno );
static int _python_ibm_db_assign_options( void* handle, int type, long opt_key, PyObject *data );
static SQLWCHAR* getUnicodeDataAsSQLWCHAR(PyObject *pyobj, int *isNewBuffer);
static PyObject* getSQLWCharAsPyUnicodeObject(SQLWCHAR* sqlwcharData, int sqlwcharBytesLen);

const int _check_i = 1;
#define is_bigendian() ( (*(char*)&_check_i) == 0 )
static int is_systemi, is_informix;	  /* 1 == TRUE; 0 == FALSE; */
#ifdef _WIN32
#define DLOPEN LoadLibrary
#define DLSYM GetProcAddress
#define DLCLOSE FreeLibrary
#define LIBDB2 "db2cli.dll"
#elif _AIX
#define DLOPEN dlopen
#define DLSYM dlsym
#define DLCLOSE dlclose
#define LIBDB2 "libdb2.a"
#else
#define DLOPEN dlopen
#define DLSYM dlsym
#define DLCLOSE dlclose
#define LIBDB2 "libdb2.so.1"
#endif

/* Defines a linked list structure for error messages */
typedef struct _error_msg_node {
	char err_msg[DB2_MAX_ERR_MSG_LEN];
	struct _error_msg_node *next;
} error_msg_node;

/* Defines a linked list structure for caching param data */
typedef struct _param_cache_node {
	SQLSMALLINT data_type;			/* Datatype */
	SQLUINTEGER param_size;			/* param size */
	SQLSMALLINT nullable;			/* is Nullable */
	SQLSMALLINT scale;			/* Decimal scale */
	SQLUINTEGER file_options;		/* File options if PARAM_FILE */
	SQLINTEGER	bind_indicator;		/* indicator variable for SQLBindParameter */
	int		param_num;		/* param number in stmt */
	int		param_type;		/* Type of param - INP/OUT/INP-OUT/FILE */
	int		size;			/* Size of param */
	char	*varname;			/* bound variable name */
	PyObject  *var_pyvalue;			/* bound variable value */
	SQLINTEGER	  ivalue;		/* Temp storage value */
	double	fvalue;				/* Temp storage value */
	char	  *svalue;			/* Temp storage value */
	SQLWCHAR *uvalue;			/* Temp storage value */
	DATE_STRUCT *date_value;		/* Temp storage value */
	TIME_STRUCT *time_value;		/* Temp storage value */
	TIMESTAMP_STRUCT *ts_value;		/* Temp storage value */
	struct _param_cache_node *next;		/* Pointer to next node */
} param_node;

typedef struct _conn_handle_struct {
	PyObject_HEAD
	SQLHANDLE henv;
	SQLHANDLE hdbc;
	long auto_commit;
	long c_bin_mode;
	long c_case_mode;
	long c_cursor_type;
	int handle_active;
	SQLSMALLINT error_recno_tracker;
	SQLSMALLINT errormsg_recno_tracker;
	int flag_pconnect; /* Indicates that this connection is persistent */
} conn_handle;

static void _python_ibm_db_free_conn_struct(conn_handle *handle);

static PyTypeObject conn_handleType = {
	  PyVarObject_HEAD_INIT(NULL, 0)
	  "ibm_db.IBM_DBConnection",			 /*tp_name*/
	  sizeof(conn_handle),					/*tp_basicsize*/
	  0,									 /*tp_itemsize*/
	  (destructor)_python_ibm_db_free_conn_struct, /*tp_dealloc*/
	  0,									 /*tp_print*/
	  0,									 /*tp_getattr*/
	  0,									 /*tp_setattr*/
	  0,									 /*tp_compare*/
	  0,									 /*tp_repr*/
	  0,									 /*tp_as_number*/
	  0,									 /*tp_as_sequence*/
	  0,									 /*tp_as_mapping*/
	  0,									 /*tp_hash */
	  0,									 /*tp_call*/
	  0,									 /*tp_str*/
	  0,									 /*tp_getattro*/
	  0,									 /*tp_setattro*/
	  0,									 /*tp_as_buffer*/
	  Py_TPFLAGS_DEFAULT,					/*tp_flags*/
	  "IBM DataServer connection object",	/* tp_doc */
	  0,									 /* tp_traverse */
	  0,									 /* tp_clear */
	  0,									 /* tp_richcompare */
	  0,									 /* tp_weaklistoffset */
	  0,									 /* tp_iter */
	  0,									 /* tp_iternext */
	  0,									 /* tp_methods */
	  0,									 /* tp_members */
	  0,									 /* tp_getset */
	  0,									 /* tp_base */
	  0,									 /* tp_dict */
	  0,									 /* tp_descr_get */
	  0,									 /* tp_descr_set */
	  0,									 /* tp_dictoffset */
	  0,									 /* tp_init */
};



typedef union {
	SQLINTEGER i_val;
	SQLDOUBLE d_val;
	SQLFLOAT f_val;
	SQLSMALLINT s_val;
	SQLCHAR *str_val;
	SQLREAL r_val;
	SQLWCHAR *w_val;
	TIMESTAMP_STRUCT *ts_val;
	DATE_STRUCT *date_val;
	TIME_STRUCT *time_val;
} ibm_db_row_data_type;


typedef struct {
	SQLINTEGER out_length;
	ibm_db_row_data_type data;
} ibm_db_row_type;

typedef struct _ibm_db_result_set_info_struct {
	SQLCHAR	*name;
	SQLSMALLINT type;
	SQLUINTEGER size;
	SQLSMALLINT scale;
	SQLSMALLINT nullable;
	unsigned char *mem_alloc;  /* Mem free */
} ibm_db_result_set_info;

typedef struct _row_hash_struct {
	PyObject *hash;
} row_hash_struct;

typedef struct _stmt_handle_struct {
	PyObject_HEAD
	SQLHANDLE hdbc;
	SQLHANDLE hstmt;
	long s_bin_mode;
	long cursor_type;
	long s_case_mode;
	SQLSMALLINT error_recno_tracker;
	SQLSMALLINT errormsg_recno_tracker;

	/* Parameter Caching variables */
	param_node *head_cache_list;
	param_node *current_node;

	int num_params;		  /* Number of Params */
	int file_param;		  /* if option passed in is FILE_PARAM */
	int num_columns;
	ibm_db_result_set_info *column_info;
	ibm_db_row_type *row_data;
} stmt_handle;

static void _python_ibm_db_free_stmt_struct(stmt_handle *handle);

static PyTypeObject stmt_handleType = {
	PyVarObject_HEAD_INIT(NULL, 0)
	"ibm_db.IBM_DBStatement", /*tp_name			 */
	sizeof(stmt_handle), /*tp_basicsize			 */
	0,						 /*tp_itemsize		*/
	(destructor)_python_ibm_db_free_stmt_struct, /*tp_dealloc	*/
	0,						 /*tp_print			*/
	0,						 /*tp_getattr		 */
	0,						 /*tp_setattr		 */
	0,						 /*tp_compare		 */
	0,						 /*tp_repr			*/
	0,						 /*tp_as_number		*/
	0,						 /*tp_as_sequence	 */
	0,						 /*tp_as_mapping	  */
	0,						 /*tp_hash			*/
	0,						 /*tp_call			*/
	0,						 /*tp_str			 */
	0,						 /*tp_getattro		*/
	0,						 /*tp_setattro		*/
	0,						 /*tp_as_buffer		*/
	Py_TPFLAGS_DEFAULT,		/*tp_flags			*/
	"IBM DataServer cursor object", /* tp_doc		*/
	0,						 /* tp_traverse		*/
	0,						 /* tp_clear		  */
	0,						 /* tp_richcompare	*/
	0,						 /* tp_weaklistoffset */
	0,						 /* tp_iter			*/
	0,						 /* tp_iternext		*/
	0,						 /* tp_methods		*/
	0,						 /* tp_members		*/
	0,						 /* tp_getset		 */
	0,						 /* tp_base			*/
	0,						 /* tp_dict			*/
	0,						 /* tp_descr_get	  */
	0,						 /* tp_descr_set	  */
	0,						 /* tp_dictoffset	 */
	0,						 /* tp_init			*/
};

/* equivalent functions on different platforms */
#ifdef _WIN32
#define STRCASECMP stricmp
#else
#define STRCASECMP strcasecmp
#endif

static void python_ibm_db_init_globals(struct _ibm_db_globals *ibm_db_globals) {
	/* env handle */
	ibm_db_globals->bin_mode = 1;

	memset(ibm_db_globals->__python_conn_err_msg, 0, DB2_MAX_ERR_MSG_LEN);
	memset(ibm_db_globals->__python_stmt_err_msg, 0, DB2_MAX_ERR_MSG_LEN);
	memset(ibm_db_globals->__python_conn_err_state, 0, SQL_SQLSTATE_SIZE + 1);
	memset(ibm_db_globals->__python_stmt_err_state, 0, SQL_SQLSTATE_SIZE + 1);
}

static PyObject *persistent_list;

char *estrdup(char *data) {
	int len = strlen(data);
	char *dup = ALLOC_N(char, len+1);
	if ( dup == NULL ) {
		PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
		return NULL;
	}
	strcpy(dup, data);
	return dup;
} 
	
char *estrndup(char *data, int max) {
	int len = strlen(data);
	char *dup;
	if (len > max){
		len = max;
	}
	dup = ALLOC_N(char, len+1);
	if ( dup == NULL ) {
		PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
		return NULL;
	}
	strcpy(dup, data);
	return dup;
} 
	
char *strtolower(char *data, int max) {
	while (max--){
		data[max] = tolower(data[max]);
	}
	return data;
} 
	
char *strtoupper(char *data, int max) {
	while (max--){
		data[max] = toupper(data[max]);
	}
	return data;
} 

/*	static void _python_ibm_db_free_conn_struct */
static void _python_ibm_db_free_conn_struct(conn_handle *handle) {

	/* Disconnect from DB. If stmt is allocated, it is freed automatically */
	if ( handle->handle_active && !handle->flag_pconnect) {
		if(handle->auto_commit == 0){
			SQLEndTran(SQL_HANDLE_DBC, (SQLHDBC)handle->hdbc, SQL_ROLLBACK);
		}
		SQLDisconnect((SQLHDBC)handle->hdbc);
		SQLFreeHandle(SQL_HANDLE_DBC, handle->hdbc);
		SQLFreeHandle(SQL_HANDLE_ENV, handle->henv);
	}
	Py_TYPE(handle)->tp_free((PyObject*)handle);
}

/*	static void _python_ibm_db_free_row_struct */
/*
 * static void _python_ibm_db_free_row_struct(row_hash_struct *handle) {
 *  free(handle);
 * }
 */

/*	static void _python_ibm_db_free_result_struct(stmt_handle* handle) */
static void _python_ibm_db_free_result_struct(stmt_handle* handle) {
	int i;
	param_node *curr_ptr = NULL, *prev_ptr = NULL;

	if ( handle != NULL ) {
		/* Free param cache list */
		curr_ptr = handle->head_cache_list;
		prev_ptr = handle->head_cache_list;

		while (curr_ptr != NULL) {
			curr_ptr = curr_ptr->next;
			if (prev_ptr->varname) {
				PyMem_Del(prev_ptr->varname);
				prev_ptr->varname = NULL;
			}
			if (prev_ptr->svalue){ 
				PyMem_Del(prev_ptr->svalue);
				prev_ptr->svalue = NULL;
			}
			if (prev_ptr->uvalue){ 
				PyMem_Del(prev_ptr->uvalue);
				prev_ptr->uvalue = NULL;
			}
			PyMem_Del(prev_ptr);

			prev_ptr = curr_ptr;
		}
		handle->head_cache_list = NULL;
		/* free row data cache */
		if (handle->row_data) {
			for (i = 0; i<handle->num_columns; i++) {
				switch (handle->column_info[i].type) {
					case SQL_CHAR:
					case SQL_VARCHAR:
					case SQL_LONGVARCHAR:
					case SQL_WCHAR:
					case SQL_WVARCHAR:
					case SQL_GRAPHIC:
					case SQL_VARGRAPHIC:
					case SQL_LONGVARGRAPHIC:
					case SQL_BIGINT:
					case SQL_DECIMAL:
					case SQL_NUMERIC:
					case SQL_XML:
					case SQL_DECFLOAT:
						if ( handle->row_data[i].data.str_val != NULL ) {
							PyMem_Del(handle->row_data[i].data.str_val);
							handle->row_data[i].data.str_val = NULL;
						}
						if ( handle->row_data[i].data.w_val != NULL ) {
							PyMem_Del(handle->row_data[i].data.w_val);
							handle->row_data[i].data.w_val = NULL;
						}
						break;
					case SQL_TYPE_TIMESTAMP:
						if ( handle->row_data[i].data.ts_val != NULL ) {
							PyMem_Del(handle->row_data[i].data.ts_val);
							handle->row_data[i].data.ts_val = NULL;
						}
						break;
					case SQL_TYPE_DATE:
						if ( handle->row_data[i].data.date_val != NULL ) {
							PyMem_Del(handle->row_data[i].data.date_val);
							handle->row_data[i].data.date_val = NULL;
						}
						break;
					case SQL_TYPE_TIME:
						if ( handle->row_data[i].data.time_val != NULL ) {
							PyMem_Del(handle->row_data[i].data.time_val);
							handle->row_data[i].data.time_val = NULL;
						}
						break;
				}
			}
			PyMem_Del(handle->row_data);
			handle->row_data = NULL;
		}

		/* free column info cache */
		if ( handle->column_info ) {
			for (i = 0; i<handle->num_columns; i++) {
				PyMem_Del(handle->column_info[i].name);
				/* Mem free */
				if(handle->column_info[i].mem_alloc){
					PyMem_Del(handle->column_info[i].mem_alloc);
				}
			}
			PyMem_Del(handle->column_info);
			handle->column_info = NULL;
			handle->num_columns = 0;
		}
	}
}

/* static stmt_handle *_ibm_db_new_stmt_struct(conn_handle* conn_res) */	
static stmt_handle *_ibm_db_new_stmt_struct(conn_handle* conn_res) {
	stmt_handle *stmt_res;

	stmt_res = PyObject_NEW(stmt_handle, &stmt_handleType);
	/* memset(stmt_res, 0, sizeof(stmt_handle)); */

	/* Initialize stmt resource so parsing assigns updated options if needed */
	stmt_res->hdbc = conn_res->hdbc;
	stmt_res->s_bin_mode = conn_res->c_bin_mode;
	stmt_res->cursor_type = conn_res->c_cursor_type;
	stmt_res->s_case_mode = conn_res->c_case_mode;

	stmt_res->head_cache_list = NULL;
	stmt_res->current_node = NULL;

	stmt_res->num_params = 0;
	stmt_res->file_param = 0;

	stmt_res->column_info = NULL;
	stmt_res->num_columns = 0;

	stmt_res->error_recno_tracker = 1;
	stmt_res->errormsg_recno_tracker = 1;

	stmt_res->row_data = NULL;

	return stmt_res;
}

/*	static _python_ibm_db_free_stmt_struct */
static void _python_ibm_db_free_stmt_struct(stmt_handle *handle) {
	if ( handle->hstmt != -1 ) {
		SQLFreeHandle( SQL_HANDLE_STMT, handle->hstmt);
		if ( handle ) {
			_python_ibm_db_free_result_struct(handle);
		}
	}
	Py_TYPE(handle)->tp_free((PyObject*)handle);
}

/*	static void _python_ibm_db_init_error_info(stmt_handle *stmt_res) */
static void _python_ibm_db_init_error_info(stmt_handle *stmt_res) {
	stmt_res->error_recno_tracker = 1;
	stmt_res->errormsg_recno_tracker = 1;
}

/*	static void _python_ibm_db_check_sql_errors( SQLHANDLE handle, SQLSMALLINT hType, int rc, int cpy_to_global, char* ret_str, int API SQLSMALLINT recno)
*/
static void _python_ibm_db_check_sql_errors( SQLHANDLE handle, SQLSMALLINT hType, int rc, int cpy_to_global, char* ret_str, int API, SQLSMALLINT recno )
{
	SQLCHAR msg[SQL_MAX_MESSAGE_LENGTH + 1];
	SQLCHAR sqlstate[SQL_SQLSTATE_SIZE + 1];
	SQLCHAR errMsg[DB2_MAX_ERR_MSG_LEN];
	SQLINTEGER sqlcode;
	SQLSMALLINT length;
	char *p;

	memset(errMsg, '\0', DB2_MAX_ERR_MSG_LEN);
	memset(msg, '\0', SQL_MAX_MESSAGE_LENGTH + 1);
	if ( SQLGetDiagRec(hType, handle, recno, sqlstate, &sqlcode, msg,
		SQL_MAX_MESSAGE_LENGTH + 1, &length ) == SQL_SUCCESS) {

			while ((p = strchr( (char *)msg, '\n' ))) {
				*p = '\0';
			}
			sprintf((char*)errMsg, "%s SQLCODE=%d", (char*)msg, (int)sqlcode);
			if (cpy_to_global != 0) {
				PyErr_SetString(PyExc_Exception, (char *) errMsg);
			}

			switch (rc) {
				case SQL_ERROR:
					/* Need to copy the error msg and sqlstate into the symbol Table 
					* to cache these results */
					if ( cpy_to_global ) {
						switch (hType) {
							case SQL_HANDLE_DBC:
								strncpy(IBM_DB_G(__python_conn_err_state), (char*)sqlstate, SQL_SQLSTATE_SIZE+1);
								strncpy(IBM_DB_G(__python_conn_err_msg), (char*)errMsg, DB2_MAX_ERR_MSG_LEN);
								break;

							case SQL_HANDLE_STMT:
								strncpy(IBM_DB_G(__python_stmt_err_state), (char*)sqlstate, SQL_SQLSTATE_SIZE+1);
								strncpy(IBM_DB_G(__python_stmt_err_msg), (char*)errMsg, DB2_MAX_ERR_MSG_LEN);
								break;
						}
					}
					/* This call was made from ibm_db_errmsg or ibm_db_error */
					/* Check for error and return */
					switch (API) {
						case DB2_ERR:
							if ( ret_str != NULL ) {
								strncpy(ret_str, (char*)sqlstate, SQL_SQLSTATE_SIZE+1);
							}
							return;
						case DB2_ERRMSG:
							if ( ret_str != NULL ) {
								strncpy(ret_str, (char*)errMsg, DB2_MAX_ERR_MSG_LEN);
							}
							return;
						default:
							break;
					}
					break;
				default:
					break;
			}
		}
}

/*	static int _python_ibm_db_assign_options( void *handle, int type, long opt_key, PyObject *data ) */
static int _python_ibm_db_assign_options( void *handle, int type, long opt_key, PyObject *data )
{
	int rc = 0;
	long option_num = 0;
	SQLWCHAR *option_str = NULL;
	int isNewBuffer;

	/* First check to see if it is a non-cli attribut */
	if (opt_key == ATTR_CASE) {
		option_num = NUM2LONG(data);
		if (type == SQL_HANDLE_STMT) {
			switch (option_num) {
				case CASE_LOWER:
					((stmt_handle*)handle)->s_case_mode = CASE_LOWER;
					break;
				case CASE_UPPER:
					((stmt_handle*)handle)->s_case_mode = CASE_UPPER;
					break;
				case CASE_NATURAL:
					((stmt_handle*)handle)->s_case_mode = CASE_NATURAL;
					break;
				default:
					PyErr_SetString(PyExc_Exception, "ATTR_CASE attribute must be one of CASE_LOWER, CASE_UPPER, or CASE_NATURAL");
					return -1;
			}
		} else if (type == SQL_HANDLE_DBC) {
			switch (option_num) {
				case CASE_LOWER:
					((conn_handle*)handle)->c_case_mode = CASE_LOWER;
					break;
				case CASE_UPPER:
					((conn_handle*)handle)->c_case_mode = CASE_UPPER;
					break;
				case CASE_NATURAL:
					((conn_handle*)handle)->c_case_mode = CASE_NATURAL;
					break;
				default:
					PyErr_SetString(PyExc_Exception, "ATTR_CASE attribute must be one of CASE_LOWER, CASE_UPPER, or CASE_NATURAL");
					return -1;
			}
		} else {
			PyErr_SetString(PyExc_Exception, "Connection or statement handle must be passed in.");
			return -1;
		}
	} else if (type == SQL_HANDLE_STMT) {
		if (PyString_Check(data)|| PyUnicode_Check(data)) {
			data = PyUnicode_FromObject(data);
			option_str = getUnicodeDataAsSQLWCHAR(data, &isNewBuffer);
			rc = SQLSetStmtAttrW((SQLHSTMT)((stmt_handle *)handle)->hstmt, opt_key, (SQLPOINTER)option_str, SQL_IS_INTEGER );
			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors((SQLHSTMT)((stmt_handle *)handle)->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			}
			if (isNewBuffer)
				PyMem_Del(option_str);
			
		} else {
			option_num = NUM2LONG(data);
			if (opt_key == SQL_ATTR_AUTOCOMMIT && option_num == SQL_AUTOCOMMIT_OFF) ((conn_handle*)handle)->auto_commit = 0;
			else if (opt_key == SQL_ATTR_AUTOCOMMIT && option_num == SQL_AUTOCOMMIT_ON) ((conn_handle*)handle)->auto_commit = 1;
			rc = SQLSetStmtAttr((SQLHSTMT)((stmt_handle *)handle)->hstmt, opt_key, (SQLPOINTER)option_num, SQL_IS_INTEGER );
			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors((SQLHSTMT)((stmt_handle *)handle)->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			}
		}
	} else if (type == SQL_HANDLE_DBC) {
		if (PyString_Check(data)|| PyUnicode_Check(data)) {
			data = PyUnicode_FromObject(data);
			option_str = getUnicodeDataAsSQLWCHAR(data, &isNewBuffer);
			rc = SQLSetConnectAttrW((SQLHSTMT)((conn_handle*)handle)->hdbc, opt_key, (SQLPOINTER)option_str, SQL_NTS);
			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors((SQLHSTMT)((stmt_handle *)handle)->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			}
			if (isNewBuffer)
				PyMem_Del(option_str);
			
		} else {
			option_num = NUM2LONG(data);
			if (opt_key == SQL_ATTR_AUTOCOMMIT && option_num == SQL_AUTOCOMMIT_OFF) ((conn_handle*)handle)->auto_commit = 0;
			else if (opt_key == SQL_ATTR_AUTOCOMMIT && option_num == SQL_AUTOCOMMIT_ON) ((conn_handle*)handle)->auto_commit = 1;
			rc = SQLSetConnectAttrW((SQLHSTMT)((conn_handle*)handle)->hdbc, opt_key, (SQLPOINTER)option_num, SQL_IS_INTEGER);
			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors((SQLHSTMT)((stmt_handle *)handle)->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			}
		}
	} else {
		PyErr_SetString(PyExc_Exception, "Connection or statement handle must be passed in.");
		return -1;
	}
	return 0;
}

/*	static int _python_ibm_db_parse_options( PyObject *options, int type, void *handle)
*/
static int _python_ibm_db_parse_options ( PyObject *options, int type, void *handle )
{
	int numOpts = 0, i = 0;
	PyObject *keys = NULL;
	PyObject *key = NULL; /* Holds the Option Index Key */
	PyObject *data = NULL;
	PyObject *tc_pass = NULL;
	int rc = 0;

	if ( !NIL_P(options) ) {
		keys = PyDict_Keys(options);
		numOpts = PyList_Size(keys);

		for ( i = 0; i < numOpts; i++) {
			key = PyList_GetItem(keys, i);
			data = PyDict_GetItem(options, key);

			if(NUM2LONG(key) == SQL_ATTR_TRUSTED_CONTEXT_PASSWORD) {
				tc_pass = data;
			} else {
				/* Assign options to handle. */
				/* Sets the options in the handle with CLI/ODBC calls */
				rc = _python_ibm_db_assign_options(handle, type, NUM2LONG(key), data);
			}
			if (rc)
				return SQL_ERROR;
		}
		if (!NIL_P(tc_pass) ) {
			rc = _python_ibm_db_assign_options(handle, type, SQL_ATTR_TRUSTED_CONTEXT_PASSWORD, tc_pass);
		}
		if (rc)
			return SQL_ERROR;
	}
	return SQL_SUCCESS;
}

/*	static int _python_ibm_db_get_result_set_info(stmt_handle *stmt_res)
initialize the result set information of each column. This must be done once
*/
static int _python_ibm_db_get_result_set_info(stmt_handle *stmt_res)
{
	int rc = -1, i;
	SQLSMALLINT nResultCols = 0, name_length;
	SQLCHAR tmp_name[BUFSIZ];

	Py_BEGIN_ALLOW_THREADS;
	rc = SQLNumResultCols((SQLHSTMT)stmt_res->hstmt, &nResultCols);
	Py_END_ALLOW_THREADS;

	if ( rc == SQL_ERROR || nResultCols == 0) {
	  _python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
									  SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
	  return -1;
	}
	stmt_res->num_columns = nResultCols;
	stmt_res->column_info = ALLOC_N(ibm_db_result_set_info, nResultCols);
	if ( stmt_res->column_info == NULL ) {
	  PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
	  return -1;
	}
	memset(stmt_res->column_info, 0, sizeof(ibm_db_result_set_info)*nResultCols);
	/* return a set of attributes for a column */
	for (i = 0 ; i < nResultCols; i++) {
	  Py_BEGIN_ALLOW_THREADS;
	  rc = SQLDescribeCol((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT)(i + 1 ),
						  (SQLCHAR *)&tmp_name, BUFSIZ, &name_length, 
						  &stmt_res->column_info[i].type,
						  &stmt_res->column_info[i].size, 
						  &stmt_res->column_info[i].scale,
						  &stmt_res->column_info[i].nullable);
	  Py_END_ALLOW_THREADS;

	  if ( rc == SQL_ERROR ) {
		 _python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
										 SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
		 return -1;
	  }
	  if ( name_length <= 0 ) {
		 stmt_res->column_info[i].name = (SQLCHAR *)estrdup("");
		 if ( stmt_res->column_info[i].name == NULL ) {
			PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
			 return -1;
		 }

	  } else if (name_length >= BUFSIZ ) {
		 /* column name is longer than BUFSIZ */
		 stmt_res->column_info[i].name = (SQLCHAR*)ALLOC_N(char, name_length+1);
		 if ( stmt_res->column_info[i].name == NULL ) {
			PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
			 return -1;
		 }

		 Py_BEGIN_ALLOW_THREADS;
		 rc = SQLDescribeCol((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT)(i + 1),
							 stmt_res->column_info[i].name, name_length, 
							 &name_length, &stmt_res->column_info[i].type, 
							 &stmt_res->column_info[i].size, 
							 &stmt_res->column_info[i].scale, 
							 &stmt_res->column_info[i].nullable);
		 Py_END_ALLOW_THREADS;

		 if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
											SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			return -1;
		 }
	  } else {
		 stmt_res->column_info[i].name = (SQLCHAR*)estrdup((char*)tmp_name);
		 if ( stmt_res->column_info[i].name == NULL ) {
			PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
			 return -1;
		 }

	  }
	}
	return 0;
}

/*	static int _python_ibn_bind_column_helper(stmt_handle *stmt_res)
	bind columns to data, this must be done once
*/
static int _python_ibm_db_bind_column_helper(stmt_handle *stmt_res)
{
	SQLINTEGER in_length = 0;
	SQLSMALLINT column_type;
	ibm_db_row_data_type *row_data;
	int i, rc = SQL_SUCCESS;

	stmt_res->row_data = ALLOC_N(ibm_db_row_type, stmt_res->num_columns);
	if ( stmt_res->row_data == NULL ) {
		PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
		return -1;
	}
	memset(stmt_res->row_data, 0, sizeof(ibm_db_row_type)*stmt_res->num_columns);

	for (i = 0; i<stmt_res->num_columns; i++) {
		column_type = stmt_res->column_info[i].type;
		row_data = &stmt_res->row_data[i].data;
		switch(column_type) {
			case SQL_CHAR:
			case SQL_VARCHAR:
			case SQL_LONGVARCHAR:
			case SQL_WCHAR:
			case SQL_WVARCHAR:
			case SQL_GRAPHIC:
			case SQL_VARGRAPHIC:
			case SQL_LONGVARGRAPHIC:
				in_length = stmt_res->column_info[i].size+1;
				row_data->w_val = (SQLWCHAR *) ALLOC_N(SQLWCHAR, in_length);
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_WCHAR, row_data->w_val, in_length * sizeof(SQLWCHAR),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
						SQL_HANDLE_STMT, rc, 1, NULL, 
						-1, 1);
				}
				break;

			case SQL_BINARY:
			case SQL_LONGVARBINARY:
			case SQL_VARBINARY:
				if ( stmt_res->s_bin_mode == CONVERT ) {
					in_length = 2*(stmt_res->column_info[i].size)+1;
					row_data->str_val = (SQLCHAR *)ALLOC_N(char, in_length);
					if ( row_data->str_val == NULL ) {
						PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
						return -1;
					}

					Py_BEGIN_ALLOW_THREADS;
					rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
						SQL_C_CHAR, row_data->str_val, in_length,
						(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
					Py_END_ALLOW_THREADS;

					if ( rc == SQL_ERROR ) {
						_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
							SQL_HANDLE_STMT, rc, 1, NULL,
							-1, 1);
					}
				} else {
					in_length = stmt_res->column_info[i].size+1;
					row_data->str_val = (SQLCHAR *)ALLOC_N(char, in_length);
					if ( row_data->str_val == NULL ) {
						PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
						return -1;
					}

					Py_BEGIN_ALLOW_THREADS;
					rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
						SQL_C_DEFAULT, row_data->str_val, in_length,
						(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
					Py_END_ALLOW_THREADS;

					if ( rc == SQL_ERROR ) {
						_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
							SQL_HANDLE_STMT, rc, 1, NULL,
							-1, 1);
					}
				}
				break;

			case SQL_BIGINT:
			case SQL_DECFLOAT:
				in_length = stmt_res->column_info[i].size+2;
				row_data->str_val = (SQLCHAR *)ALLOC_N(char, in_length);
				if ( row_data->str_val == NULL ) {
					PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
					return -1;
				}

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_CHAR, row_data->str_val, in_length,
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
						SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
				}
				break;

			case SQL_TYPE_DATE:
				row_data->date_val = ALLOC(DATE_STRUCT);
				if ( row_data->date_val == NULL ) {
					PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
					return -1;
				}

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_TYPE_DATE, row_data->date_val, sizeof(DATE_STRUCT),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt,
						SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
				}
				break;

			case SQL_TYPE_TIME:
				row_data->time_val = ALLOC(TIME_STRUCT);
				if ( row_data->time_val == NULL ) {
					PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
					return -1;
				}

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_TYPE_TIME, row_data->time_val, sizeof(TIME_STRUCT),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt,
						SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
				}
				break;

			case SQL_TYPE_TIMESTAMP:
				row_data->ts_val = ALLOC(TIMESTAMP_STRUCT);
				if ( row_data->ts_val == NULL ) {
					PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
					return -1;
				}

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_TYPE_TIMESTAMP, row_data->time_val, sizeof(TIMESTAMP_STRUCT),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt,
						SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
					return -1;
				}
				break;

			case SQL_SMALLINT:

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_DEFAULT, &row_data->s_val, 
					sizeof(row_data->s_val),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
						SQL_HANDLE_STMT, rc, 1, NULL, -1,
						1);
				}
				break;

			case SQL_INTEGER:

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_DEFAULT, &row_data->i_val, 
					sizeof(row_data->i_val),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
						SQL_HANDLE_STMT, rc, 1, NULL, -1,
						1);
				}
				break;

			case SQL_REAL:

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_FLOAT, &row_data->r_val, 
					sizeof(row_data->r_val),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
						SQL_HANDLE_STMT, rc, 1, NULL, -1,
						1);
				}
				break;

			case SQL_FLOAT:

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_DEFAULT, &row_data->f_val, 
					sizeof(row_data->f_val),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
						SQL_HANDLE_STMT, rc, 1, NULL, -1,
						1);
				}
				break;

			case SQL_DOUBLE:

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_DEFAULT, &row_data->d_val, 
					sizeof(row_data->d_val),
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
						SQL_HANDLE_STMT, rc, 1, NULL, -1,
						1);
				}
				break;

			case SQL_DECIMAL:
			case SQL_NUMERIC:
				in_length = stmt_res->column_info[i].size +
					stmt_res->column_info[i].scale + 2 + 1;
				row_data->str_val = (SQLCHAR *)ALLOC_N(char, in_length);
				if ( row_data->str_val == NULL ) {
					PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
					return -1;
				}

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindCol((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)(i+1),
					SQL_C_CHAR, row_data->str_val, in_length,
					(SQLINTEGER *)(&stmt_res->row_data[i].out_length));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
						SQL_HANDLE_STMT, rc, 1, NULL, -1,
						1);
				}
				break;

			case SQL_BLOB:
			case SQL_CLOB:
			case SQL_DBCLOB:
			case SQL_XML:
				stmt_res->row_data[i].out_length = 0;
				break;

			default:
				break;
		}
	}
	return rc;
}

/*	static void _python_ibm_db_clear_stmt_err_cache () */
static void _python_ibm_db_clear_stmt_err_cache(void)
{
	memset(IBM_DB_G(__python_stmt_err_msg), 0, DB2_MAX_ERR_MSG_LEN);
	memset(IBM_DB_G(__python_stmt_err_state), 0, SQL_SQLSTATE_SIZE + 1);
}

/*	static int _python_ibm_db_connect_helper( argc, argv, isPersistent ) */
static PyObject *_python_ibm_db_connect_helper( PyObject *self, PyObject *args, int isPersistent )
{
	PyObject *databaseObj = NULL;
	PyObject *uidObj = NULL;
	PyObject *passwordObj = NULL;
	SQLWCHAR *database = NULL;
	SQLWCHAR *uid = NULL;
	SQLWCHAR *password = NULL;
	PyObject *options = NULL;
	PyObject *literal_replacementObj = NULL;
	SQLINTEGER literal_replacement;
	PyObject *equal = StringOBJ_FromASCII("=");
	int rc = 0;
	SQLINTEGER conn_alive;
	conn_handle *conn_res = NULL;
	int reused = 0;
	PyObject *hKey = NULL;
	PyObject *entry = NULL;
	char server[2048];
	int isNewBuffer;
	
	conn_alive = 1;	

	if (!PyArg_ParseTuple(args, "OOO|OO", &databaseObj, &uidObj, &passwordObj, &options, &literal_replacementObj)){
		return NULL;
	}
	do {
		databaseObj = PyUnicode_FromObject(databaseObj);
		uidObj = PyUnicode_FromObject(uidObj);
		passwordObj = PyUnicode_FromObject(passwordObj);

		/* Check if we already have a connection for this userID & database 
		* combination
		*/ 
		if (isPersistent) {
			hKey = PyUnicode_Concat(StringOBJ_FromASCII("__ibm_db_"), uidObj);
			hKey = PyUnicode_Concat(hKey, databaseObj);
			hKey = PyUnicode_Concat(hKey, passwordObj);

			entry = PyDict_GetItem(persistent_list, hKey);

			if (entry != NULL) {
				Py_INCREF(entry);
				conn_res = (conn_handle *)entry;
#ifndef PASE /* i5/OS server mode is persistant */
				/* Need to reinitialize connection? */
				rc = SQLGetConnectAttr(conn_res->hdbc, SQL_ATTR_PING_DB, 
					(SQLPOINTER)&conn_alive, 0, NULL);
				if ( (rc == SQL_SUCCESS) && conn_alive ) {
					_python_ibm_db_check_sql_errors( conn_res->hdbc, SQL_HANDLE_DBC, 
						rc, 1, NULL, -1, 1);
					reused = 1;
				} /* else will re-connect since connection is dead */
#endif /* PASE */
				reused = 1;
			}
		} else {
			/* Need to check for max pconnections? */
		}

		if ( !NIL_P(literal_replacementObj) ) {
			literal_replacement = (SQLINTEGER) PyInt_AsLong(literal_replacementObj);
		} else {
			literal_replacement = SET_QUOTED_LITERAL_REPLACEMENT_OFF; /*QUOTED LITERAL replacemnt is OFF by default*/
		}
				
		if (conn_res == NULL) {
			conn_res = PyObject_NEW(conn_handle, &conn_handleType);
			conn_res->henv = 0;
			conn_res->hdbc = 0;
		}

		/* We need to set this early, in case we get an error below,
		so we know how to free the connection */
		conn_res->flag_pconnect = isPersistent;
		/* Allocate ENV handles if not present */
		if ( !conn_res->henv ) {
			rc = SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &(conn_res->henv));
			if (rc != SQL_SUCCESS) {
				_python_ibm_db_check_sql_errors( conn_res->henv, SQL_HANDLE_ENV, rc,
					1, NULL, -1, 1);
				break;
			}
			rc = SQLSetEnvAttr((SQLHENV)conn_res->henv, SQL_ATTR_ODBC_VERSION, 
				(void *)SQL_OV_ODBC3, 0);
		}

		if (!reused) {
			/* Alloc CONNECT Handle */
			rc = SQLAllocHandle(SQL_HANDLE_DBC, conn_res->henv, &(conn_res->hdbc));
			if (rc != SQL_SUCCESS) {
				_python_ibm_db_check_sql_errors(conn_res->henv, SQL_HANDLE_ENV, rc, 
					1, NULL, -1, 1);
				break;
			}
		}

		/* Set this after the connection handle has been allocated to avoid
		unnecessary network flows. Initialize the structure to default values */
		conn_res->auto_commit = SQL_AUTOCOMMIT_ON;
		rc = SQLSetConnectAttr((SQLHDBC)conn_res->hdbc, SQL_ATTR_AUTOCOMMIT, 
			(SQLPOINTER)(conn_res->auto_commit), SQL_NTS);

		conn_res->c_bin_mode = IBM_DB_G(bin_mode);
		conn_res->c_case_mode = CASE_NATURAL;
		conn_res->c_cursor_type = SQL_SCROLL_FORWARD_ONLY;

		conn_res->error_recno_tracker = 1;
		conn_res->errormsg_recno_tracker = 1;

		/* handle not active as of yet */
		conn_res->handle_active = 0;

		/* Set Options */
		if ( !NIL_P(options) ) {
			if(!PyDict_Check(options)) {
				PyErr_SetString(PyExc_Exception, "options Parameter must be of type dictionay");
				return NULL;
			}
			rc = _python_ibm_db_parse_options( options, SQL_HANDLE_DBC, conn_res );
			if (rc != SQL_SUCCESS) {
				SQLFreeHandle(SQL_HANDLE_DBC, conn_res->hdbc);
				SQLFreeHandle(SQL_HANDLE_ENV, conn_res->henv);
				break;
			}
		}

		if (! reused) {
			/* Connect */
			/* If the string contains a =, use SQLDriverConnect */
			if (NIL_P(databaseObj)) {
				PyErr_SetString(PyExc_Exception, "Supplied Parameter is invalid");
				return NULL;
			}
			database = getUnicodeDataAsSQLWCHAR(databaseObj, &isNewBuffer);
			if ( PyUnicode_Contains(databaseObj, equal) > 0 ) {
				rc = SQLDriverConnectW((SQLHDBC)conn_res->hdbc, (SQLHWND)NULL,
					database, SQL_NTS, NULL, 0, NULL, 
					SQL_DRIVER_NOPROMPT );
			} else {
				if (NIL_P(uidObj) || NIL_P(passwordObj)) { 
					PyErr_SetString(PyExc_Exception, "Supplied Parameter is invalid");
					return NULL;
				}
				uid = getUnicodeDataAsSQLWCHAR(uidObj, &isNewBuffer);
				password = getUnicodeDataAsSQLWCHAR(passwordObj, &isNewBuffer);
				rc = SQLConnectW((SQLHDBC)conn_res->hdbc,
					database,
					PyUnicode_GetSize(databaseObj),
					uid, 
					PyUnicode_GetSize(uidObj),
					password,
					PyUnicode_GetSize(passwordObj));
			} 
			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 
					1, NULL, -1, 1);
				SQLFreeHandle(SQL_HANDLE_DBC, conn_res->hdbc);
				SQLFreeHandle(SQL_HANDLE_ENV, conn_res->henv);
				break;
			}
			
#ifdef CLI_DBC_SERVER_TYPE_DB2LUW
#ifdef SQL_ATTR_DECFLOAT_ROUNDING_MODE
			/**
			* Code for setting SQL_ATTR_DECFLOAT_ROUNDING_MODE
			* for implementation of Decfloat Datatype
			*/

			rc = _python_ibm_db_set_decfloat_rounding_mode_client(conn_res->hdbc);
			if (rc != SQL_SUCCESS){
				  _python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc,
								  1, NULL, -1, 1);
			}
#endif
#endif

			/* Get the server name */
			memset(server, 0, sizeof(server));

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLGetInfo(conn_res->hdbc, SQL_DBMS_NAME, (SQLPOINTER)server, 
				2048, NULL);
			Py_END_ALLOW_THREADS;

			if (!strcmp(server, "AS")) is_systemi = 1;
			if (!strncmp(server, "IDS", 3)) is_informix = 1;

			/* Set SQL_ATTR_REPLACE_QUOTED_LITERALS connection attribute to
			* enable CLI numeric literal feature. This is equivalent to
			* PATCH2=71 in the db2cli.ini file
			* Note, for backward compatibility with older CLI drivers having a
			* different value for SQL_ATTR_REPLACE_QUOTED_LITERALS, we call
			* SQLSetConnectAttr() with both the old and new value
			*/
			/* Only enable this feature if we are not connected to an Informix data 
			* server 
			*/
			if (!is_informix && (literal_replacement == SET_QUOTED_LITERAL_REPLACEMENT_ON)) {
				rc = SQLSetConnectAttr((SQLHDBC)conn_res->hdbc, 
					SQL_ATTR_REPLACE_QUOTED_LITERALS, 
					(SQLPOINTER) (ENABLE_NUMERIC_LITERALS), 
					SQL_IS_INTEGER);
				if (rc != SQL_SUCCESS)
					rc = SQLSetConnectAttr((SQLHDBC)conn_res->hdbc,
					SQL_ATTR_REPLACE_QUOTED_LITERALS_OLDVALUE,
					(SQLPOINTER)(ENABLE_NUMERIC_LITERALS), 
					SQL_IS_INTEGER);
			}
			if (rc != SQL_SUCCESS) {
				_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 
					1, NULL, -1, 1);
			}
		}
		Py_XDECREF(databaseObj);
		Py_XDECREF(uidObj);
		Py_XDECREF(passwordObj);
		conn_res->handle_active = 1;
	} while (0);

	if (hKey != NULL) {
		if (! reused && rc == SQL_SUCCESS) {
			/* If we created a new persistent connection, add it to the 
			*  persistent_list
			*/
			PyDict_SetItem(persistent_list, hKey, (PyObject *)conn_res);
		}
		Py_DECREF(hKey);
	}

	if (isNewBuffer) {
		PyMem_Del(database);
		PyMem_Del(uid);
		PyMem_Del(password);
	}
	
	if ( rc != SQL_SUCCESS ) {
		if (conn_res != NULL && conn_res->handle_active) {
			rc = SQLFreeHandle(SQL_HANDLE_DBC, conn_res->hdbc);
			rc = SQLFreeHandle(SQL_HANDLE_ENV, conn_res->henv);
		}
		if (conn_res != NULL) {
			PyObject_Del(conn_res);
		}
		return NULL;						  
	} 
	return (PyObject *)conn_res;
}


/**
*This function takes a SQLWCHAR buffer (UCS-2) and returns back a PyUnicode object 
* of it that is in the correct current UCS encoding (either UCS2 or UCS4)of
* the current executing python VM
*
* @sqlwcharBytesLen - the length of sqlwcharData in bytes (not characters)
**/
static PyObject* getSQLWCharAsPyUnicodeObject(SQLWCHAR* sqlwcharData, int sqlwcharBytesLen)
{
	PyObject *sysmodule = NULL, *maxuni = NULL;
	long maxuniValue;
	PyObject* u;
	sysmodule = PyImport_ImportModule("sys");
	maxuni = PyObject_GetAttrString(sysmodule, "maxunicode");
	maxuniValue = PyInt_AsLong(maxuni);

	if (maxuniValue <= 65536) {
	/* this is UCS2 python.. nothing to do really */
		return PyUnicode_FromUnicode((Py_UNICODE *)sqlwcharData, sqlwcharBytesLen / sizeof(SQLWCHAR));
    	}
	
	if (is_bigendian()) {
		int bo = 1;
		u = PyUnicode_DecodeUTF16((char *)sqlwcharData, sqlwcharBytesLen, "strict", &bo);
	} else {
		int bo = -1;
		u = PyUnicode_DecodeUTF16((char *)sqlwcharData, sqlwcharBytesLen, "strict", &bo);
	}
	return u;
}


/**
*This function takes value as pyObject and convert it to SQLWCHAR and return it 
*
**/
static SQLWCHAR* getUnicodeDataAsSQLWCHAR(PyObject *pyobj, int *isNewBuffer)
{	
	PyObject *sysmodule = NULL, *maxuni = NULL;
	long maxuniValue;
	PyObject *pyUTFobj;
	SQLWCHAR* pNewBuffer = NULL;
	int nCharLen = PyUnicode_GET_SIZE(pyobj);

	sysmodule = PyImport_ImportModule("sys");
	maxuni = PyObject_GetAttrString(sysmodule, "maxunicode");
	maxuniValue = PyInt_AsLong(maxuni);

	if (maxuniValue <= 65536) {
		*isNewBuffer = 0;
		return (SQLWCHAR*)PyUnicode_AS_UNICODE(pyobj);
	}

	*isNewBuffer = 1;
	pNewBuffer = (SQLWCHAR *)ALLOC_N(SQLWCHAR, nCharLen + 1);
	memset(pNewBuffer, 0, sizeof(SQLWCHAR) * (nCharLen + 1));
	if (is_bigendian()) {
		pyUTFobj = PyCodec_Encode(pyobj, "utf-16-be", "strict");
	} else {
		pyUTFobj = PyCodec_Encode(pyobj, "utf-16-le", "strict");
	}
	memcpy(pNewBuffer, PyBytes_AsString(pyUTFobj), sizeof(SQLWCHAR) * (nCharLen) );
	Py_DECREF(pyUTFobj);
	return pNewBuffer;

}


#ifdef CLI_DBC_SERVER_TYPE_DB2LUW
#ifdef SQL_ATTR_DECFLOAT_ROUNDING_MODE

/**
 * Function for implementation of DECFLOAT Datatype
 *
 * Description :
 * This function retrieves the value of special register decflt_rounding
 * from the database server which signifies the current rounding mode set
 * on the server. For using decfloat, the rounding mode has to be in sync
 * on the client as well as server. Thus we set here on the client, the
 * same rounding mode as the server.
 *
 * @return: success or failure
 * */
static int _python_ibm_db_set_decfloat_rounding_mode_client(SQLHANDLE hdbc)
{
	SQLCHAR decflt_rounding[20];
	SQLHANDLE hstmt;
	int rc = 0;
	int rounding_mode;
	SQLINTEGER decfloat;


	SQLCHAR *stmt = (SQLCHAR *)"values current decfloat rounding mode";

	/* Allocate a Statement Handle */
	rc = SQLAllocHandle(SQL_HANDLE_STMT, hdbc, &hstmt);
	if (rc == SQL_ERROR) {
		_python_ibm_db_check_sql_errors(hdbc, SQL_HANDLE_DBC, rc, 1,
			NULL, -1, 1);
		return rc;
	}

	Py_BEGIN_ALLOW_THREADS;
	rc = SQLExecDirect((SQLHSTMT)hstmt, stmt, SQL_NTS);
	Py_END_ALLOW_THREADS;

	if ( rc == SQL_ERROR ) {
		_python_ibm_db_check_sql_errors((SQLHSTMT)hstmt,
			SQL_HANDLE_STMT, rc, 1, NULL,
			-1, 1);
		return rc;
	}

	Py_BEGIN_ALLOW_THREADS;
	rc = SQLBindCol((SQLHSTMT)hstmt, 1, SQL_C_DEFAULT, decflt_rounding, 20, NULL);
	Py_END_ALLOW_THREADS;

	if ( rc == SQL_ERROR ) {
		_python_ibm_db_check_sql_errors((SQLHSTMT)hstmt,
			SQL_HANDLE_STMT, rc, 1, NULL,
			-1, 1);
		return rc;
	}

	Py_BEGIN_ALLOW_THREADS;
	rc = SQLFetch(hstmt);
	Py_END_ALLOW_THREADS;

	rc = SQLFreeHandle(SQL_HANDLE_STMT, hstmt);
	
	/* Now setting up the same rounding mode on the client*/
	if (strcmp(decflt_rounding, "ROUND_HALF_EVEN") == 0) rounding_mode = ROUND_HALF_EVEN;
	if (strcmp(decflt_rounding, "ROUND_HALF_UP") == 0) rounding_mode = ROUND_HALF_UP;
	if (strcmp(decflt_rounding, "ROUND_DOWN") == 0) rounding_mode = ROUND_DOWN;
	if (strcmp(decflt_rounding, "ROUND_CEILING") == 0) rounding_mode = ROUND_CEILING;
	if (strcmp(decflt_rounding, "ROUND_FLOOR") == 0) rounding_mode = ROUND_FLOOR;

#ifndef PASE
	rc = SQLSetConnectAttr(hdbc, SQL_ATTR_DECFLOAT_ROUNDING_MODE, (SQLPOINTER)rounding_mode, SQL_NTS);
#else
	rc = SQLSetConnectAttr(hdbc, SQL_ATTR_DECFLOAT_ROUNDING_MODE, (SQLPOINTER)&rounding_mode, SQL_NTS);
#endif

	return rc;

}
#endif
#endif

/* static void _python_ibm_db_clear_conn_err_cache () */
static void _python_ibm_db_clear_conn_err_cache(void)
{
	/* Clear out the cached conn messages */
	memset(IBM_DB_G(__python_conn_err_msg), 0, DB2_MAX_ERR_MSG_LEN);
	memset(IBM_DB_G(__python_conn_err_state), 0, SQL_SQLSTATE_SIZE + 1);
}

/*!#
 * ibm_db.connect
 * ibm_db.pconnect
 * ibm_db.autocommit
 * ibm_db.bind_param
 * ibm_db.close
 * ibm_db.column_privileges
 * ibm_db.columns
 * ibm_db.foreign_keys
 * ibm_db.primary_keys
 * ibm_db.procedure_columns
 * ibm_db.procedures
 * ibm_db.special_columns
 * ibm_db.statistics
 * ibm_db.table_privileges
 * ibm_db.tables
 * ibm_db.commit
 * ibm_db.exec
 * ibm_db.free_result
 * ibm_db.prepare
 * ibm_db.execute
 * ibm_db.conn_errormsg
 * ibm_db.stmt_errormsg
 * ibm_db.conn_error
 * ibm_db.stmt_error
 * ibm_db.next_result
 * ibm_db.num_fields
 * ibm_db.num_rows
 * ibm_db.get_num_result
 * ibm_db.field_name
 * ibm_db.field_display_size
 * ibm_db.field_num
 * ibm_db.field_precision
 * ibm_db.field_scale
 * ibm_db.field_type
 * ibm_db.field_width
 * ibm_db.cursor_type
 * ibm_db.rollback
 * ibm_db.free_stmt
 * ibm_db.result
 * ibm_db.fetch_row
 * ibm_db.fetch_assoc
 * ibm_db.fetch_array
 * ibm_db.fetch_both
 * ibm_db.set_option
 * ibm_db.server_info
 * ibm_db.client_info
 * ibm_db.active
 * ibm_db.get_option
 */



/*!# ibm_db.connect
 *
 * ===Description
 *
 *  --	Returns a connection to a database
 * IBM_DBConnection ibm_db.connect (dsn=<..>, user=<..>, password=<..>,
 *								  host=<..>, database=<..>, options=<..>)
 *
 * Creates a new connection to an IBM DB2 Universal Database, IBM Cloudscape,
 * or Apache Derby database.
 *
 * ===Parameters
 *
 * ====dsn
 *
 * For an uncataloged connection to a database, database represents a complete
 * connection string in the following format:
 * DRIVER={IBM DB2 ODBC DRIVER};DATABASE=database;HOSTNAME=hostname;PORT=port;
 * PROTOCOL=TCPIP;UID=username;PWD=password;
 *	  where the parameters represent the following values:
 *		hostname
 *			The hostname or IP address of the database server.
 *		port
 *			The TCP/IP port on which the database is listening for requests.
 *		username
 *			The username with which you are connecting to the database.
 *		password
 *			The password with which you are connecting to the database.
 *
 * ====user
 *
 * The username with which you are connecting to the database.
 * This is optional if username is specified in the "dsn" string
 *
 * ====password
 *
 * The password with which you are connecting to the database.
 * This is optional if password is specified in the "dsn" string
 *
 * ====host
 *
 * The hostname or IP address of the database server.
 * This is optional if hostname is specified in the "dsn" string
 *
 * ====database
 *
 * For a cataloged connection to a database, database represents the database
 * alias in the DB2 client catalog.
 * This is optional if database is specified in the "dsn" string
 *
 * ====options
 *
 *	  An dictionary of connection options that affect the behavior of the
 *	  connection,
 *	  where valid array keys include:
 *		SQL_ATTR_AUTOCOMMIT
 *			Passing the SQL_AUTOCOMMIT_ON value turns autocommit on for this
 *			connection handle.
 *			Passing the SQL_AUTOCOMMIT_OFF value turns autocommit off for this
 *			connection handle.
 *		ATTR_CASE
 *			Passing the CASE_NATURAL value specifies that column names are
 *			returned in natural case.
 *			Passing the CASE_LOWER value specifies that column names are
 *			returned in lower case.
 *			Passing the CASE_UPPER value specifies that column names are
 *			returned in upper case.
 *		SQL_ATTR_CURSOR_TYPE
 *			Passing the SQL_SCROLL_FORWARD_ONLY value specifies a forward-only
 *			cursor for a statement resource.
 *			This is the default cursor type and is supported on all database
 *			servers.
 *			Passing the SQL_CURSOR_KEYSET_DRIVEN value specifies a scrollable
 *			cursor for a statement resource.
 *			This mode enables random access to rows in a result set, but
 *			currently is supported only by IBM DB2 Universal Database.
 * ====set_replace_quoted_literal
 *	  This variable indicates if the CLI Connection attribute SQL_ATTR_REPLACE_QUOTED_LITERAL is to be set or not
 *	  To turn it ON pass  IBM_DB::SET_QUOTED_LITERAL_REPLACEMENT_ON
 *	  To turn it OFF pass IBM_DB::SET_QUOTED_LITERAL_REPLACEMENT_OFF
 *
 *	  Default Setting: - IBM_DB::SET_QUOTED_LITERAL_REPLACEMENT_ON
 *
 * ===Return Values
 *
 *
 * Returns a IBM_DBConnection connection object if the connection attempt is
 * successful.
 * If the connection attempt fails, ibm_db.connect() returns None.
 *
 */ 
static PyObject *ibm_db_connect(PyObject *self, PyObject *args)
{
	_python_ibm_db_clear_conn_err_cache();
	return _python_ibm_db_connect_helper( self, args, 0 );
}

/*!# ibm_db.pconnect
 *
 * ===Description
 *  --	Returns a persistent connection to a database
 * resource ibm_db.pconnect ( string database, string username, string password
 * [, array options] )
 *
 * Returns a persistent connection to an IBM DB2 Universal Database,
 * IBM Cloudscape, Apache Derby or Informix Dynamic Server database.
 *
 * Calling ibm_db.close() on a persistent connection always returns TRUE, but
 * the underlying DB2 client connection remains open and waiting to serve the
 * next matching ibm_db.pconnect() request.
 *
 * ===Parameters
 *
 * ====database
 *		The database alias in the DB2 client catalog.
 *
 * ====username
 *		The username with which you are connecting to the database.
 *
 * ====password
 *		The password with which you are connecting to the database.
 *
 * ====options
 *		An associative array of connection options that affect the behavior of
 * the connection,
 *		where valid array keys include:
 *
 *		autocommit
 *			 Passing the DB2_AUTOCOMMIT_ON value turns autocommit on for this
 * connection handle.
 *			 Passing the DB2_AUTOCOMMIT_OFF value turns autocommit off for
 * this connection handle.
 *
 *		DB2_ATTR_CASE
 *			 Passing the DB2_CASE_NATURAL value specifies that column names
 * are returned in natural case.
 *			 Passing the DB2_CASE_LOWER value specifies that column names are
 * returned in lower case.
 *			 Passing the DB2_CASE_UPPER value specifies that column names are
 * returned in upper case.
 *
 *		CURSOR
 *			 Passing the SQL_SCROLL_FORWARD_ONLY value specifies a
 * forward-only cursor for a statement resource.  This is the default cursor
 * type and is supported on all database servers.
 *			 Passing the SQL_CURSOR_KEYSET_DRIVEN value specifies a scrollable
 * cursor for a statement resource. This mode enables random access to rows in a
 * result set, but currently is supported only by IBM DB2 Universal Database.
 *
 * ====set_replace_quoted_literal
 *	  This variable indicates if the CLI Connection attribute SQL_ATTR_REPLACE_QUOTED_LITERAL is to be set or not
 *	  To turn it ON pass  IBM_DB::SET_QUOTED_LITERAL_REPLACEMENT_ON
 *	  To turn it OFF pass IBM_DB::SET_QUOTED_LITERAL_REPLACEMENT_OFF
 *
 *	  Default Setting: - IBM_DB::SET_QUOTED_LITERAL_REPLACEMENT_ON
 *
 * ===Return Values
 *
 * Returns a connection handle resource if the connection attempt is successful.
 * ibm_db.pconnect() tries to reuse an existing connection resource that exactly
 * matches the database, username, and password parameters. If the connection
 * attempt fails, ibm_db.pconnect() returns FALSE.
 */
static PyObject *ibm_db_pconnect(PyObject *self, PyObject *args)
{
	_python_ibm_db_clear_conn_err_cache();
	return _python_ibm_db_connect_helper( self, args, 1);
}

/*
 * static void _python_clear_local_var(PyObject *dbNameObj, SQLWCHAR *dbName, PyObject *codesetObj, SQLWCHAR *codesetObj, PyObject *modeObj, SQLWCHAR *mode, int isNewBuffer)
 */
static void _python_clear_local_var(PyObject *dbNameObj, SQLWCHAR *dbName, PyObject *codesetObj, SQLWCHAR *codeset, PyObject *modeObj, SQLWCHAR *mode, int isNewBuffer)
{
	if ( !NIL_P( dbNameObj ) ) {
		Py_XDECREF( dbNameObj );
		if ( isNewBuffer ) {
			PyMem_Del( dbName );
		}
	}

	if ( !NIL_P( codesetObj ) ) {
		Py_XDECREF( codesetObj );
		if ( isNewBuffer ) {
			PyMem_Del( codeset );
		}
	}

	if ( !NIL_P( modeObj ) ) {
		Py_XDECREF( modeObj );
		if ( isNewBuffer ) {
			PyMem_Del( mode );
		}
	}
}

/*
 * static int _python_ibm_db_createdb(conn_handle *conn_res, PyObject *dbNameObj, PyObject *codesetObj, PyObject *modeObj, int createNX)
 */
static int _python_ibm_db_createdb(conn_handle *conn_res, PyObject *dbNameObj, PyObject *codesetObj, PyObject *modeObj, int createNX)
{
	SQLWCHAR *dbName = NULL;
	SQLWCHAR *codeset = NULL;
	SQLWCHAR *mode = NULL;
	SQLINTEGER sqlcode;
	SQLSMALLINT length;
	SQLCHAR msg[SQL_MAX_MESSAGE_LENGTH + 1];
	SQLCHAR sqlstate[SQL_SQLSTATE_SIZE + 1];
	int isNewBuffer;
	int rc = 0;
#ifdef _WIN32
	HINSTANCE cliLib = NULL;
	FARPROC sqlcreatedb;
#else
	void *cliLib = NULL;
	typedef int (*sqlcreatedbType)( SQLHDBC, SQLWCHAR *, SQLINTEGER, SQLWCHAR *, SQLINTEGER, SQLWCHAR *, SQLINTEGER );
	sqlcreatedbType sqlcreatedb;
#endif

#if defined __APPLE__ || defined _AIX
	PyErr_SetString( PyExc_Exception, "Not supported: This function is currently not supported on this platform" );
	return -1;
#else

	if ( !NIL_P( conn_res ) ) {
		if ( NIL_P( dbNameObj ) ) {
			PyErr_SetString( PyExc_Exception, "Supplied database name Parameter is invalid" );
			return -1;
		}
		/* Check to ensure the connection resource given is active */
		if ( !conn_res->handle_active ) {
			PyErr_SetString( PyExc_Exception, "Connection is not active" );
			return -1;
		}

		dbNameObj = PyUnicode_FromObject( dbNameObj );
		if ( dbNameObj != NULL &&  dbNameObj != Py_None ) {
			dbName = getUnicodeDataAsSQLWCHAR( dbNameObj, &isNewBuffer );
		} else {
			return -1;
		}
		
		if ( !NIL_P( codesetObj ) ) {
			codesetObj = PyUnicode_FromObject( codesetObj );
			if ( codesetObj != NULL &&  codesetObj != Py_None ) {
				codeset = getUnicodeDataAsSQLWCHAR( codesetObj, &isNewBuffer );
			} else {
				_python_clear_local_var( dbNameObj, dbName, NULL, NULL, NULL, NULL, isNewBuffer );
				return -1;
			}
				
		}
		if ( !NIL_P( modeObj ) ) {
			modeObj = PyUnicode_FromObject( modeObj );
			if ( codesetObj != NULL &&  codesetObj != Py_None ) {
				mode = getUnicodeDataAsSQLWCHAR( modeObj, &isNewBuffer );	
			} else {
				_python_clear_local_var( dbNameObj, dbName, codesetObj, codeset, NULL, NULL, isNewBuffer );
				return -1;
			}
		}

#ifdef _WIN32
		cliLib = DLOPEN( LIBDB2 );
#else
		cliLib = DLOPEN( LIBDB2, RTLD_LAZY );
#endif
		if ( !cliLib ) {
			sprintf( (char *)msg, "Error in loading %s library file", LIBDB2 );
			PyErr_SetString( PyExc_Exception,  (char *)msg );
			_python_clear_local_var( dbNameObj, dbName, codesetObj, codeset, modeObj, mode, isNewBuffer );	
			return -1;
		}
#ifdef _WIN32
		sqlcreatedb =  DLSYM( cliLib, "SQLCreateDbW" );
#else
		sqlcreatedb = (sqlcreatedbType) DLSYM( cliLib, "SQLCreateDbW" );
#endif
		if ( sqlcreatedb == NULL )  {
#ifdef _WIN32
			sprintf( (char *)msg, "Not supported: This function is only supported from v97fp4 version of cli on window" );
#else
			sprintf( (char *)msg, "Not supported: This function is only supported from v97fp3 version of cli" );
#endif
			PyErr_SetString( PyExc_Exception, (char *)msg );
			DLCLOSE( cliLib );
			_python_clear_local_var( dbNameObj, dbName, codesetObj, codeset, modeObj, mode, isNewBuffer );
			return -1;
		}

		Py_BEGIN_ALLOW_THREADS;
		rc = (*sqlcreatedb)( (SQLHDBC)conn_res->hdbc, dbName, SQL_NTS, codeset, SQL_NTS, mode, SQL_NTS );
		Py_END_ALLOW_THREADS;
		
		DLCLOSE( cliLib );		
		if ( rc != SQL_SUCCESS ) {
			if ( createNX == 1 ) {
				if ( SQLGetDiagRec( SQL_HANDLE_DBC, (SQLHDBC)conn_res->hdbc, 1, sqlstate, &sqlcode, msg, SQL_MAX_MESSAGE_LENGTH + 1, &length ) == SQL_SUCCESS ) {
					if ( sqlcode == -1005 ) {
						_python_clear_local_var( dbNameObj, dbName, codesetObj, codeset, modeObj, mode, isNewBuffer );
						return 0;
					}
				}
			}
			_python_ibm_db_check_sql_errors( conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, NULL, -1, 1 );
			_python_clear_local_var( dbNameObj, dbName, codesetObj, codeset, modeObj, mode, isNewBuffer );
			return -1;
		}
		_python_clear_local_var( dbNameObj, dbName, codesetObj, codeset, modeObj, mode, isNewBuffer );
		return 0;
	} else {
		PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
		return -1;
	}
#endif
}

/*
 * static int _python_ibm_db_dropdb(conn_handle *conn_res, PyObject *dbNameObj, int recreate)
 */
static int _python_ibm_db_dropdb(conn_handle *conn_res, PyObject *dbNameObj, int recreate)
{
	SQLWCHAR *dbName = NULL;
	SQLINTEGER sqlcode;
	SQLSMALLINT length;
	SQLCHAR msg[SQL_MAX_MESSAGE_LENGTH + 1];
	SQLCHAR sqlstate[SQL_SQLSTATE_SIZE + 1];
	int isNewBuffer;
	int rc = 0;
#ifdef _WIN32
	FARPROC sqldropdb;
	HINSTANCE cliLib = NULL;
#else
	typedef int (*sqldropdbType)( SQLHDBC, SQLWCHAR *, SQLINTEGER );
	sqldropdbType sqldropdb;	
	void *cliLib;
#endif

#if defined __APPLE__ || defined _AIX
	PyErr_SetString( PyExc_Exception, "Not supported: This function is currently not supported on this platform" );
	return -1;
#else

	if ( !NIL_P( conn_res ) ) {
		if ( NIL_P( dbNameObj ) ) {
			PyErr_SetString( PyExc_Exception, "Supplied database name Parameter is invalid" );
			return -1;
		}
		/* Check to ensure the connection resource given is active */
		if ( !conn_res->handle_active ) {
			PyErr_SetString( PyExc_Exception, "Connection is not active" );
			return -1;
		}

		dbNameObj = PyUnicode_FromObject( dbNameObj );
		if ( dbNameObj != NULL &&  dbNameObj != Py_None ) {
			dbName = getUnicodeDataAsSQLWCHAR( dbNameObj, &isNewBuffer );	
		} else {
			return -1;
		}

#ifdef _WIN32
		cliLib = DLOPEN( LIBDB2 );
#else
		cliLib = DLOPEN( LIBDB2, RTLD_LAZY );
#endif
		if ( !cliLib ) {
			sprintf( (char *)msg, "Error in loading %s library file", LIBDB2 );
			PyErr_SetString( PyExc_Exception, (char *)msg );
			_python_clear_local_var( dbNameObj, dbName, NULL, NULL, NULL, NULL, isNewBuffer );
			return -1;
		}
#ifdef _WIN32
		sqldropdb = DLSYM( cliLib, "SQLDropDbW" );
#else
		sqldropdb = (sqldropdbType)DLSYM( cliLib, "SQLDropDbW" );
#endif
		if ( sqldropdb == NULL)  {
#ifdef _WIN32
			sprintf( (char *)msg, "Not supported: This function is only supported from v97fp4 version of cli on window" );
#else
			sprintf( (char *)msg, "Not supported: This function is only supported from v97fp3 version of cli" );
#endif
			PyErr_SetString( PyExc_Exception, (char *)msg );
			DLCLOSE( cliLib );
			_python_clear_local_var( dbNameObj, dbName, NULL, NULL, NULL, NULL, isNewBuffer );
			return -1;
		}

		Py_BEGIN_ALLOW_THREADS;
		rc = sqldropdb( conn_res->hdbc, dbName, SQL_NTS );
		Py_END_ALLOW_THREADS;
		
		DLCLOSE( cliLib );
		if ( rc != SQL_SUCCESS ) {
			if ( recreate ) {
				if ( SQLGetDiagRec( SQL_HANDLE_DBC, (SQLHDBC)conn_res->hdbc, 1, sqlstate, &sqlcode, msg, SQL_MAX_MESSAGE_LENGTH + 1, &length ) == SQL_SUCCESS ) {
					if ( sqlcode == -1013 ) {
						_python_clear_local_var( dbNameObj, dbName, NULL, NULL, NULL, NULL, isNewBuffer );
						return 0;
					}
				}
			}
			_python_ibm_db_check_sql_errors( conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, NULL, -1, 1 );
			return -1;
		}
		_python_clear_local_var( dbNameObj, dbName, NULL, NULL, NULL, NULL, isNewBuffer );
		return 0;
	} else {
		PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
		return -1;
	}
#endif
}

/*!# ibm_db.createdb
 *
 * ===Description
 *  True/None ibm_db.createdb ( IBM_DBConnection connection, string dbName [, codeSet, mode] )
 *
 * Creates a database by using the specified database name, code set, and mode
 *
 * ===Parameters
 *
 * ====connection
 *      A valid database server instance connection resource variable as returned from ibm_db.connect() by specifying the ATTACH keyword.
 *
 * ====dbName
 *      Name of the database that is to be created.
 *
 * ====codeSet
 *      Database code set information.
 *      Note: If the value of the codeSet argument not specified, the database is created in the Unicode code page for DB2 data servers and in the UTF-8 code page for IDS data servers.
 *
 * ====mode
 *      Database logging mode.
 *      Note: This value is applicable only to IDS data servers.
 *
 * ===Return Value
 *  Returns True on successful creation of database else return None
 */
PyObject *ibm_db_createdb(PyObject *self, PyObject *args)
{
	PyObject *py_conn_res = NULL;
	PyObject *dbNameObj = NULL;
	PyObject *codesetObj = NULL;
	PyObject *modeObj = NULL;
	int rc = -1;

	if ( !PyArg_ParseTuple( args, "OO|OO", &py_conn_res, &dbNameObj, &codesetObj, &modeObj ) ) {
		return NULL;
	}
	if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
		PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
		return NULL;
	}
	rc = _python_ibm_db_createdb((conn_handle *)py_conn_res, dbNameObj, codesetObj, modeObj, 0);
	if ( rc == 0 ) {
		Py_RETURN_TRUE;
	} else {
		return NULL;
	}	
}

/*!# ibm_db.dropdb
 *
 * ===Description
 *  True/None ibm_db.dropdb ( IBM_DBConnection connection, string dbName )
 *
 * Drops the specified database
 *
 * ===Parameters
 *
 * ====connection
 *      A valid database server instance connection resource variable as returned from ibm_db.connect() by specifying the ATTACH keyword.
 *
 * ====dbName
 *      Name of the database that is to be dropped.
 *
 * ===Return Value
 *  Returns True if specified database dropped sucessfully else None
 */
PyObject *ibm_db_dropdb(PyObject *self, PyObject *args)
{
	PyObject *py_conn_res = NULL;
	PyObject *dbNameObj = NULL;
	int rc = -1;

	if ( !PyArg_ParseTuple( args, "OO", &py_conn_res, &dbNameObj ) ) {
		return NULL;
	}
	if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
		PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
		return NULL;
	}
	rc = _python_ibm_db_dropdb( (conn_handle *)py_conn_res, dbNameObj, 0 );
	if ( rc == 0 ) {
		Py_RETURN_TRUE;
	} else {
		return NULL;
	}
}

/*ibm_db.recreatedb
 *
 * ===Description
 *  True/None ibm_db.recreatedb ( IBM_DBConnection connection, string dbName [, codeSet, mode] )
 *
 * Drop and then recreates a database by using the specified database name, code set, and mode
 *
 * ===Parameters
 *
 * ====connection
 *      A valid database server instance connection resource variable as returned from ibm_db.connect() by specifying the ATTACH keyword.
 *
 * ====dbName
 *      Name of the database that is to be created.
 *
 * ====codeSet
 *      Database code set information.
 *      Note: If the value of the codeSet argument not specified, the database is created in the Unicode code page for DB2 data servers and in the UTF-8 code page for IDS data servers.
 *
 * ====mode
 *      Database logging mode.
 *      Note: This value is applicable only to IDS data servers.
 *
 * ===Return Value
 *  Returns True if specified database created successfully else return None
 */
PyObject *ibm_db_recreatedb(PyObject *self, PyObject *args)
{
	PyObject *py_conn_res = NULL;
	PyObject *dbNameObj = NULL;
	PyObject *codesetObj = NULL;
	PyObject *modeObj = NULL;
	int rc = -1;

	if ( !PyArg_ParseTuple( args, "OO|OO", &py_conn_res, &dbNameObj, &codesetObj, &modeObj ) ) {
		return NULL;
	}
	if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
		PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
		return NULL;
	}
	rc = _python_ibm_db_dropdb((conn_handle *)py_conn_res, dbNameObj, 1 );
	if ( rc != 0 ) {
		return NULL; 
	} 

	rc = _python_ibm_db_createdb((conn_handle *)py_conn_res, dbNameObj, codesetObj, modeObj, 0);
	if ( rc == 0 ) {
		Py_RETURN_TRUE;
	} else {
		return NULL;
	}
}

/*!# ibm_db.createdbNX 
 *
 * ===Description
 *  True/None ibm_db.createdbNX ( IBM_DBConnection connection, string dbName [, codeSet, mode] )
 *
 * Creates the database if not exist by using the specified database name, code set, and mode
 *
 * ===Parameters
 *
 * ====connection
 *      A valid database server instance connection resource variable as returned from ibm_db.connect() by specifying the ATTACH keyword.
 *
 * ====dbName
 *      Name of the database that is to be created.
 *
 * ====codeSet
 *      Database code set information.
 *      Note: If the value of the codeSet argument not specified, the database is created in the Unicode code page for DB2 data servers and in the UTF-8 code page for IDS data servers.
 *
 * ====mode
 *      Database logging mode.
 *      Note: This value is applicable only to IDS data servers.
 *
 * ===Return Value
 *  Returns True if database already exists or created sucessfully else return None
 */
PyObject *ibm_db_createdbNX(PyObject *self, PyObject *args)
{
	PyObject *py_conn_res = NULL;
	PyObject *dbNameObj = NULL;
	PyObject *codesetObj = NULL;
	PyObject *modeObj = NULL;
	int rc = -1;
	
	if ( !PyArg_ParseTuple( args, "OO|OO", &py_conn_res, &dbNameObj, &codesetObj, &modeObj ) ) {
		return NULL;
	}
	if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
		PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
		return NULL;
	}	
	rc = _python_ibm_db_createdb((conn_handle *)py_conn_res, dbNameObj, codesetObj, modeObj, 1);
	if ( rc == 0 ) {
		Py_RETURN_TRUE;
	} else {
		return NULL;
	}
}

/*!# ibm_db.autocommit
 *
 * ===Description
 *
 * mixed ibm_db.autocommit ( resource connection [, bool value] )
 *
 * Returns or sets the AUTOCOMMIT behavior of the specified connection resource.
 *
 * ===Parameters
 *
 * ====connection
 *	A valid database connection resource variable as returned from connect()
 * or pconnect().
 *
 * ====value
 *	One of the following constants:
 *	SQL_AUTOCOMMIT_OFF
 *		  Turns AUTOCOMMIT off.
 *	SQL_AUTOCOMMIT_ON
 *		  Turns AUTOCOMMIT on.
 *
 * ===Return Values
 *
 * When ibm_db.autocommit() receives only the connection parameter, it returns
 * the current state of AUTOCOMMIT for the requested connection as an integer
 * value. A value of 0 indicates that AUTOCOMMIT is off, while a value of 1
 * indicates that AUTOCOMMIT is on.
 *
 * When ibm_db.autocommit() receives both the connection parameter and
 * autocommit parameter, it attempts to set the AUTOCOMMIT state of the
 * requested connection to the corresponding state.
 *
 * Returns TRUE on success or FALSE on failure.
 */ 
static PyObject *ibm_db_autocommit(PyObject *self, PyObject *args)			
{
	PyObject *py_autocommit = NULL;
	PyObject *py_conn_res = NULL;
	conn_handle *conn_res = NULL;
	int rc;
	SQLINTEGER autocommit = -1;

	if (!PyArg_ParseTuple(args, "O|O", &py_conn_res, &py_autocommit)){
		return NULL;
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
		if (!NIL_P(py_autocommit)) {
			if (PyInt_Check(py_autocommit)) { 
				autocommit = (SQLINTEGER)PyInt_AsLong(py_autocommit);
			} else {
				PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
				return NULL;
			}
		}
		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			return NULL;
		}

	  /* If value in handle is different from value passed in */
		if (PyTuple_Size(args) == 2) {
			if(autocommit != (conn_res->auto_commit)) {
#ifndef PASE
				rc = SQLSetConnectAttr((SQLHDBC)conn_res->hdbc, SQL_ATTR_AUTOCOMMIT, (SQLPOINTER) (autocommit == 0 ? SQL_AUTOCOMMIT_OFF : SQL_AUTOCOMMIT_ON), SQL_IS_INTEGER);
#else
				rc = SQLSetConnectAttr((SQLHDBC)conn_res->hdbc, SQL_ATTR_AUTOCOMMIT, (SQLPOINTER)&autocommit, SQL_IS_INTEGER);
#endif
				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, 
												rc, 1, NULL, -1, 1);
				}
				conn_res->auto_commit = autocommit;
			}
			Py_INCREF(Py_True);
			return Py_True;
		} else {
			return PyInt_FromLong(conn_res->auto_commit);
		}
	}
	return NULL;
}

/*	static void _python_ibm_db_add_param_cache( stmt_handle *stmt_res, int param_no, PyObject *var_pyvalue, char *varname, int varname_len, int param_type, int size, SQLSMALLINT data_type, SQLSMALLINT precision, SQLSMALLINT scale, SQLSMALLINT nullable )
*/
static void _python_ibm_db_add_param_cache( stmt_handle *stmt_res, int param_no, PyObject *var_pyvalue, int param_type, int size, SQLSMALLINT data_type, SQLUINTEGER precision, SQLSMALLINT scale, SQLSMALLINT nullable )
{
	param_node *tmp_curr = NULL, *prev = stmt_res->head_cache_list, *curr = stmt_res->head_cache_list;

	while ( (curr != NULL) && (curr->param_num < param_no) ) {
		prev = curr;
		curr = curr->next;
	}

	if ( curr == NULL || curr->param_num != param_no ) {
		/* Allocate memory and make new node to be added */
		tmp_curr = ALLOC(param_node);
		memset(tmp_curr, 0, sizeof(param_node));

		/* assign values */
		tmp_curr->data_type = data_type;
		tmp_curr->param_size = precision;
		tmp_curr->nullable = nullable;
		tmp_curr->scale = scale;
		tmp_curr->param_num = param_no;
		tmp_curr->file_options = SQL_FILE_READ;
		tmp_curr->param_type = param_type;
		tmp_curr->size = size;

		/* Set this flag in stmt_res if a FILE INPUT is present */
		if ( param_type == PARAM_FILE) {
			stmt_res->file_param = 1;
		}

		if ( var_pyvalue != NULL) {
			tmp_curr->var_pyvalue = var_pyvalue;
		}

		/* link pointers for the list */
		if ( prev == NULL ) {
			stmt_res->head_cache_list = tmp_curr;
		} else {
			prev->next = tmp_curr;
		}
		tmp_curr->next = curr;

		/* Increment num params added */
		stmt_res->num_params++;
	} else {
		/* Both the nodes are for the same param no */
		/* Replace Information */
		curr->data_type = data_type;
		curr->param_size = precision;
		curr->nullable = nullable;
		curr->scale = scale;
		curr->param_num = param_no;
		curr->file_options = SQL_FILE_READ;
		curr->param_type = param_type;
		curr->size = size;

		/* Set this flag in stmt_res if a FILE INPUT is present */
		if ( param_type == PARAM_FILE) {
			stmt_res->file_param = 1;
		}

		if ( var_pyvalue != NULL) {
			curr->var_pyvalue = var_pyvalue;
		}

	}
}

/*
 * static PyObject *_python_ibm_db_bind_param_helper(int argc, stmt_handle *stmt_res, SQLUSMALLINT param_no, PyObject *var_pyvalue, long param_type,
 * 					 long data_type, long precision, long scale, long size)
 */
static PyObject *_python_ibm_db_bind_param_helper(int argc, stmt_handle *stmt_res, SQLUSMALLINT param_no, PyObject *var_pyvalue, long param_type, long data_type, long precision, long scale, long size)
{
	SQLSMALLINT sql_data_type = 0;
	SQLUINTEGER sql_precision = 0;
	SQLSMALLINT sql_scale = 0;
	SQLSMALLINT sql_nullable = SQL_NO_NULLS;
	char error[DB2_MAX_ERR_MSG_LEN];
	int rc = 0;
	
	/* Check for Param options */
	switch (argc) {
		/* if argc == 3, then the default value for param_type will be used */
		case 3:
			param_type = SQL_PARAM_INPUT;

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLDescribeParam((SQLHSTMT)stmt_res->hstmt, (SQLUSMALLINT)param_no, &sql_data_type, &sql_precision, &sql_scale, &sql_nullable);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
				sprintf(error, "Describe Param Failed: %s", 
				IBM_DB_G(__python_stmt_err_msg));
				PyErr_SetString(PyExc_Exception, error);
				return NULL;
			}
			/* Add to cache */
			_python_ibm_db_add_param_cache(stmt_res, param_no, var_pyvalue, 
										param_type, size, 
										sql_data_type, sql_precision, 
										sql_scale, sql_nullable );
			break;

		case 4:
			Py_BEGIN_ALLOW_THREADS;
			rc = SQLDescribeParam((SQLHSTMT)stmt_res->hstmt, 
								(SQLUSMALLINT)param_no, &sql_data_type, 
								&sql_precision, &sql_scale, &sql_nullable);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT,
												rc, 1, NULL, -1, 1);
				sprintf(error, "Describe Param Failed: %s", 
						IBM_DB_G(__python_stmt_err_msg));
				PyErr_SetString(PyExc_Exception, error);
				return NULL;
			}
			/* Add to cache */
			_python_ibm_db_add_param_cache(stmt_res, param_no, var_pyvalue,
											param_type, size, 
											sql_data_type, sql_precision, 
											sql_scale, sql_nullable );
			break;

		case 5:
			Py_BEGIN_ALLOW_THREADS;
			rc = SQLDescribeParam((SQLHSTMT)stmt_res->hstmt, 
								(SQLUSMALLINT)param_no, &sql_data_type, 
								&sql_precision, &sql_scale, &sql_nullable);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
								rc, 1, NULL, -1, 1);
				sprintf(error, "Describe Param Failed: %s", 
								IBM_DB_G(__python_stmt_err_msg));
				PyErr_SetString(PyExc_Exception, error);
				return NULL;
			}
			sql_data_type = (SQLSMALLINT)data_type;
			/* Add to cache */
			_python_ibm_db_add_param_cache(stmt_res, param_no, var_pyvalue,
											param_type, size, 
											sql_data_type, sql_precision, 
											sql_scale, sql_nullable );
			break;

		case 6:
			Py_BEGIN_ALLOW_THREADS;
			rc = SQLDescribeParam((SQLHSTMT)stmt_res->hstmt, 
								(SQLUSMALLINT)param_no, &sql_data_type, 
							&sql_precision, &sql_scale, &sql_nullable);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT,
												rc, 1, NULL, -1, 1);
				sprintf(error, "Describe Param Failed: %s", 
						IBM_DB_G(__python_stmt_err_msg));
				PyErr_SetString(PyExc_Exception, error);
				return NULL;
			}
			sql_data_type = (SQLSMALLINT)data_type;
			sql_precision = (SQLUINTEGER)precision;
			/* Add to cache */
			_python_ibm_db_add_param_cache(stmt_res, param_no, var_pyvalue,
											param_type, size, 
											sql_data_type, sql_precision, 
											sql_scale, sql_nullable );
			break;

		case 7:
		case 8:
			/* Cache param data passed 
			* I am using a linked list of nodes here because I don't know 
			* before hand how many params are being passed in/bound. 
			* To determine this, a call to SQLNumParams is necessary. 
			* This is take away any advantages an array would have over 
			* linked list access 
			* Data is being copied over to the correct types for subsequent 
			* CLI call because this might cause problems on other platforms 
			* such as AIX 
			*/
			sql_data_type = (SQLSMALLINT)data_type;
			sql_precision = (SQLUINTEGER)precision;
			sql_scale = (SQLSMALLINT)scale;
			_python_ibm_db_add_param_cache(stmt_res, param_no, var_pyvalue,
											param_type, size, 
											sql_data_type, sql_precision, 
											sql_scale, sql_nullable );
			break;
	
		default:
			/* WRONG_PARAM_COUNT; */
			return NULL;
	}
	/* end Switch */

	/* We bind data with DB2 CLI in ibm_db.execute() */
	/* This will save network flow if we need to override params in it */

	Py_INCREF(Py_True);
	return Py_True;
}

/*!# ibm_db.bind_param
 *
 * ===Description
 * Py_True/Py_None ibm_db.bind_param (resource stmt, int parameter-number,
 *									string variable [, int parameter-type
 *									[, int data-type [, int precision
 *									[, int scale [, int size[]]]]]] )
 *
 * Binds a Python variable to an SQL statement parameter in a IBM_DBStatement
 * resource returned by ibm_db.prepare().
 * This function gives you more control over the parameter type, data type,
 * precision, and scale for the parameter than simply passing the variable as
 * part of the optional input array to ibm_db.execute().
 *
 * ===Parameters
 *
 * ====stmt
 *
 *	A prepared statement returned from ibm_db.prepare().
 *
 * ====parameter-number
 *
 *	Specifies the 1-indexed position of the parameter in the prepared
 * statement.
 *
 * ====variable
 *
 *	A Python variable to bind to the parameter specified by parameter-number.
 *
 * ====parameter-type
 *
 *	A constant specifying whether the Python variable should be bound to the
 * SQL parameter as an input parameter (SQL_PARAM_INPUT), an output parameter
 * (SQL_PARAM_OUTPUT), or as a parameter that accepts input and returns output
 * (SQL_PARAM_INPUT_OUTPUT). To avoid memory overhead, you can also specify
 * PARAM_FILE to bind the Python variable to the name of a file that contains
 * large object (BLOB, CLOB, or DBCLOB) data.
 *
 * ====data-type
 *
 *	A constant specifying the SQL data type that the Python variable should be
 * bound as: one of SQL_BINARY, DB2_CHAR, DB2_DOUBLE, or DB2_LONG .
 *
 * ====precision
 *
 *	Specifies the precision that the variable should be bound to the database. *
 * ====scale
 *
 *	  Specifies the scale that the variable should be bound to the database.
 *
 * ====size
 *
 *	  Specifies the size that should be retreived from an INOUT/OUT parameter.
 *
 * ===Return Values
 *
 *	Returns Py_True on success or NULL on failure.
 */
static PyObject *ibm_db_bind_param(PyObject *self, PyObject *args)			
{
	PyObject *var_pyvalue = NULL;
	PyObject *py_param_type = NULL;
	PyObject *py_data_type = NULL;
	PyObject *py_precision = NULL;
	PyObject *py_scale = NULL;
	PyObject *py_size = NULL;
	PyObject *py_param_no = NULL;
	PyObject *py_stmt_res = NULL;

	long param_type = SQL_PARAM_INPUT;
	/* LONG types used for data being passed in */
	SQLUSMALLINT param_no = 0;
	long data_type = 0;
	long precision = 0;
	long scale = 0;
	long size = 0;
	stmt_handle *stmt_res;
	
	if (!PyArg_ParseTuple(args, "OOO|OOOOO", &py_stmt_res, &py_param_no, 
						&var_pyvalue, &py_param_type, 
						&py_data_type, &py_precision, 
						&py_scale, &py_size)) {
	
		return NULL;
	}

	if (!NIL_P(py_param_no)) {
		if (PyInt_Check(py_param_no)) {
			param_no = (SQLUSMALLINT) PyInt_AsLong(py_param_no);
		} else {
			PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
			return NULL;
		}
	}
	if (py_param_type != NULL && py_param_type != Py_None && 
		TYPE(py_param_type) == PYTHON_FIXNUM) {
		param_type = PyInt_AS_LONG(py_param_type);
	}

	if (py_data_type != NULL && py_data_type != Py_None && 
		TYPE(py_data_type) == PYTHON_FIXNUM) {
		data_type = PyInt_AS_LONG(py_data_type);
	}

	if (py_precision != NULL && py_precision != Py_None && 
		TYPE(py_precision) == PYTHON_FIXNUM) {
		precision = PyInt_AS_LONG(py_precision);
	}

	if (py_scale != NULL && py_scale != Py_None && 
		TYPE(py_scale) == PYTHON_FIXNUM) {
		scale = PyInt_AS_LONG(py_scale);
	}

	if (py_size != NULL && py_size != Py_None && 
		TYPE(py_size) == PYTHON_FIXNUM) {
		size = PyInt_AS_LONG(py_size);
	}

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}
		return _python_ibm_db_bind_param_helper(PyTuple_Size(args), stmt_res, param_no, var_pyvalue, param_type, data_type, precision, scale, size);
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
		return NULL;
	}
}


/*!# ibm_db.close
 *
 * ===Description
 *
 * bool ibm_db.close ( resource connection )
 *
 * This function closes a DB2 client connection created with ibm_db.connect()
 * and returns the corresponding resources to the database server.
 *
 * If you attempt to close a persistent DB2 client connection created with
 * ibm_db.pconnect(), the close request returns TRUE and the persistent IBM Data
 * Server client connection remains available for the next caller.
 *
 * ===Parameters
 *
 * ====connection
 *	Specifies an active DB2 client connection.
 *
 * ===Return Values
 * Returns TRUE on success or FALSE on failure.
 */
static PyObject *ibm_db_close(PyObject *self, PyObject *args)			
{
	PyObject *py_conn_res = NULL;
	conn_handle *conn_res = NULL;
	int rc;

	if (!PyArg_ParseTuple(args, "O", &py_conn_res))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		/* Check to see if it's a persistent connection; 
		 * if so, just return true 
		*/

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			return NULL;
		}

		if ( conn_res->handle_active && !conn_res->flag_pconnect ) {
			/* Disconnect from DB. If stmt is allocated, 
			* it is freed automatically 
			*/
			if (conn_res->auto_commit == 0) {
				rc = SQLEndTran(SQL_HANDLE_DBC, (SQLHDBC)conn_res->hdbc, 
								SQL_ROLLBACK);
				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, 
													rc, 1, NULL, -1, 1);
					return NULL;
				}
			}
			rc = SQLDisconnect((SQLHDBC)conn_res->hdbc);
			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 
												1, NULL, -1, 1);
				return NULL;
			}

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLFreeHandle(SQL_HANDLE_DBC, conn_res->hdbc);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 
												1, NULL, -1, 1);

				rc = SQLFreeHandle(SQL_HANDLE_ENV, conn_res->henv);
				return NULL;
			}

			rc = SQLFreeHandle(SQL_HANDLE_ENV, conn_res->henv);
			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(conn_res->henv, SQL_HANDLE_ENV, rc, 
												1, NULL, -1, 1);
				return NULL;
			}

			conn_res->handle_active = 0;
			Py_INCREF(Py_True);
			return Py_True;
		} else if ( conn_res->flag_pconnect ) {
			/* Do we need to call FreeStmt or something to close cursors? */
			Py_INCREF(Py_True);
			return Py_True;
		} else {
			return NULL;
		}
	} else {
		return NULL;
	}
}

/*!# ibm_db.column_privileges
 *
 * ===Description
 * resource ibm_db.column_privileges ( resource connection [, string qualifier
 * [, string schema [, string table-name [, string column-name]]]] )
 *
 * Returns a result set listing the columns and associated privileges for a
 * table.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema which contains the tables. To match all schemas, pass NULL
 * or an empty string.
 *
 * ====table-name
 *		The name of the table or view. To match all tables in the database,
 * pass NULL or an empty string.
 *
 * ====column-name
 *		The name of the column. To match all columns in the table, pass NULL
 * or an empty string.
 *
 * ===Return Values
 * Returns a statement resource with a result set containing rows describing
 * the column privileges for columns matching the specified parameters. The rows
 * are composed of the following columns:
 *
 * TABLE_CAT:: Name of the catalog. The value is NULL if this table does not
 * have catalogs.
 * TABLE_SCHEM:: Name of the schema.
 * TABLE_NAME:: Name of the table or view.
 * COLUMN_NAME:: Name of the column.
 * GRANTOR:: Authorization ID of the user who granted the privilege.
 * GRANTEE:: Authorization ID of the user to whom the privilege was granted.
 * PRIVILEGE:: The privilege for the column.
 * IS_GRANTABLE:: Whether the GRANTEE is permitted to grant this privilege to
 * other users.
 */
static PyObject *ibm_db_column_privileges(PyObject *self, PyObject *args)
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *table_name = NULL;
	SQLWCHAR *column_name = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_table_name = NULL;
	PyObject *py_column_name = NULL;
	PyObject *py_conn_res = NULL;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	int rc;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "O|OOOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_table_name, &py_column_name))
		return NULL;
	
	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_table_name != NULL && py_table_name != Py_None) {
		if (PyString_Check(py_table_name) || PyUnicode_Check(py_table_name)){
			py_table_name = PyUnicode_FromObject(py_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}

	if (py_column_name != NULL && py_column_name != Py_None) {
		if (PyString_Check(py_column_name) || PyUnicode_Check(py_table_name)){
			py_column_name = PyUnicode_FromObject(py_column_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "column_name must be a string");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_column_name);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);
		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_column_name);

			Py_RETURN_FALSE;
		}
		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_table_name && py_table_name != Py_None )
			table_name = getUnicodeDataAsSQLWCHAR(py_table_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLColumnPrivilegesW((SQLHSTMT)stmt_res->hstmt, qualifier, SQL_NTS,
							owner, SQL_NTS, table_name, SQL_NTS, column_name,
							SQL_NTS);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
			if(qualifier) PyMem_Del(qualifier);
			if(owner) PyMem_Del(owner);
			if(table_name) PyMem_Del(table_name);
		}
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
							SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_column_name);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);
		Py_XDECREF(py_column_name);

		return (PyObject *)stmt_res;
	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);
		Py_XDECREF(py_column_name);

		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.columns
 * ===Description
 * resource ibm_db.columns ( resource connection [, string qualifier
 * [, string schema [, string table-name [, string column-name]]]] )
 *
 * Returns a result set listing the columns and associated metadata for a table.
 *
 * ===Parameters
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema which contains the tables. To match all schemas, pass '%'.
 *
 * ====table-name
 *		The name of the table or view. To match all tables in the database,
 * pass NULL or an empty string.
 *
 * ====column-name
 *		The name of the column. To match all columns in the table, pass NULL or
 * an empty string.
 *
 * ===Return Values
 * Returns a statement resource with a result set containing rows describing the
 * columns matching the specified parameters.
 * The rows are composed of the following columns:
 *
 * TABLE_CAT:: Name of the catalog. The value is NULL if this table does not
 * have catalogs.
 * TABLE_SCHEM:: Name of the schema.
 * TABLE_NAME:: Name of the table or view.
 * COLUMN_NAME:: Name of the column.
 * DATA_TYPE:: The SQL data type for the column represented as an integer value.
 * TYPE_NAME:: A string representing the data type for the column.
 * COLUMN_SIZE:: An integer value representing the size of the column.
 * BUFFER_LENGTH:: Maximum number of bytes necessary to store data from this
 * column.
 * DECIMAL_DIGITS:: The scale of the column, or NULL where scale is not
 * applicable.
 * NUM_PREC_RADIX:: An integer value of either 10 (representing an exact numeric
 * data type), 2 (representing an approximate numeric data type), or NULL
 * (representing a data type for which radix is not applicable).
 * NULLABLE:: An integer value representing whether the column is nullable or
 * not.
 * REMARKS:: Description of the column.
 * COLUMN_DEF:: Default value for the column.
 * SQL_DATA_TYPE:: An integer value representing the size of the column.
 * SQL_DATETIME_SUB:: Returns an integer value representing a datetime subtype
 * code, or NULL for SQL data types to which this does not apply.
 * CHAR_OCTET_LENGTH::	Maximum length in octets for a character data type
 * column, which matches COLUMN_SIZE for single-byte character set data, or
 * NULL for non-character data types.
 * ORDINAL_POSITION:: The 1-indexed position of the column in the table.
 * IS_NULLABLE:: A string value where 'YES' means that the column is nullable
 * and 'NO' means that the column is not nullable.
 */
static PyObject *ibm_db_columns(PyObject *self, PyObject *args)			
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *table_name = NULL;
	SQLWCHAR *column_name = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_table_name = NULL;
	PyObject *py_column_name = NULL;
	PyObject *py_conn_res = NULL;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	int rc;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "O|OOOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_table_name, &py_column_name))
		return NULL;

	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_table_name != NULL && py_table_name != Py_None) {
		if (PyString_Check(py_table_name) || PyUnicode_Check(py_table_name)){
			py_table_name = PyUnicode_FromObject(py_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}

	if (py_column_name != NULL && py_column_name != Py_None) {
		if (PyString_Check(py_column_name) || PyUnicode_Check(py_table_name)){
			py_column_name = PyUnicode_FromObject(py_column_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "column_name must be a string");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_column_name);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_column_name);

			Py_RETURN_FALSE;
		}

		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_table_name && py_table_name != Py_None )
			table_name = getUnicodeDataAsSQLWCHAR(py_table_name, &isNewBuffer);
		if (py_column_name && py_column_name != Py_None )
			column_name = getUnicodeDataAsSQLWCHAR(py_column_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLColumnsW((SQLHSTMT)stmt_res->hstmt, qualifier, SQL_NTS,
			owner,SQL_NTS, table_name, SQL_NTS, column_name, SQL_NTS);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(qualifier) PyMem_Del(qualifier);
		    if(owner) PyMem_Del(owner);
		    if(table_name) PyMem_Del(table_name);
		    if(column_name) PyMem_Del(column_name);
		}	
				
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, 
				SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_column_name);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);
		Py_XDECREF(py_column_name);

		return (PyObject *)stmt_res;				  
	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);
		Py_XDECREF(py_column_name);

		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.foreign_keys
 *
 * ===Description
 * resource ibm_db.foreign_keys ( resource connection, string pk_qualifier,
 * string pk_schema, string pk_table-name, string fk_qualifier
 * string fk_schema, string fk_table-name )
 *
 * Returns a result set listing the foreign keys for a table.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====pk_qualifier
 *		A qualifier for the pk_table-name argument for the DB2 databases 
 * running on OS/390 or z/OS servers. For other databases, pass NULL or an empty 
 * string. 
 *
 * ====pk_schema
 *		The schema for the pk_table-name argument which contains the tables. If 
 * schema is NULL, ibm_db.foreign_keys() matches the schema for the current 
 * connection. 
 *
 * ====pk_table-name
 *		The name of the table which contains the primary key.
 *
 * ====fk_qualifier
 *		A qualifier for the fk_table-name argument for the DB2 databases
 * running on OS/390 or z/OS servers. For other databases, pass NULL or an empty
 * string.
 *
 * ====fk_schema
 *		The schema for the fk_table-name argument which contains the tables. If
 * schema is NULL, ibm_db.foreign_keys() matches the schema for the current
 * connection.
 *
 * ====fk_table-name
 *		The name of the table which contains the foreign key.
 *
 * ===Return Values
 *
 * Returns a statement resource with a result set containing rows describing the
 * foreign keys for the specified table. The result set is composed of the
 * following columns:
 *
 * Column name::	Description
 * PKTABLE_CAT:: Name of the catalog for the table containing the primary key.
 * The value is NULL if this table does not have catalogs.
 * PKTABLE_SCHEM:: Name of the schema for the table containing the primary key.
 * PKTABLE_NAME:: Name of the table containing the primary key.
 * PKCOLUMN_NAME:: Name of the column containing the primary key.
 * FKTABLE_CAT:: Name of the catalog for the table containing the foreign key.
 * The value is NULL if this table does not have catalogs.
 * FKTABLE_SCHEM:: Name of the schema for the table containing the foreign key.
 * FKTABLE_NAME:: Name of the table containing the foreign key.
 * FKCOLUMN_NAME:: Name of the column containing the foreign key.
 * KEY_SEQ:: 1-indexed position of the column in the key.
 * UPDATE_RULE:: Integer value representing the action applied to the foreign
 * key when the SQL operation is UPDATE.
 * DELETE_RULE:: Integer value representing the action applied to the foreign
 * key when the SQL operation is DELETE.
 * FK_NAME:: The name of the foreign key.
 * PK_NAME:: The name of the primary key.
 * DEFERRABILITY:: An integer value representing whether the foreign key
 * deferrability is SQL_INITIALLY_DEFERRED, SQL_INITIALLY_IMMEDIATE, or
 * SQL_NOT_DEFERRABLE.
 */
static PyObject *ibm_db_foreign_keys(PyObject *self, PyObject *args)
{
	SQLWCHAR *pk_qualifier = NULL;
	SQLWCHAR *pk_owner = NULL;
	SQLWCHAR *pk_table_name = NULL;
	SQLWCHAR *fk_qualifier = NULL;
	SQLWCHAR *fk_owner = NULL;
	SQLWCHAR *fk_table_name = NULL;
	int rc;
	conn_handle *conn_res = NULL;
	stmt_handle *stmt_res;
	PyObject *py_conn_res = NULL;
	PyObject *py_pk_qualifier = NULL;
	PyObject *py_pk_owner = NULL;
	PyObject *py_pk_table_name = NULL;
	PyObject *py_fk_qualifier = NULL;
	PyObject *py_fk_owner = NULL;
	PyObject *py_fk_table_name = NULL;
	int isNewBuffer = 0;

	if (!PyArg_ParseTuple(args, "OOOO|OOO", &py_conn_res, &py_pk_qualifier, 
		&py_pk_owner, &py_pk_table_name, &py_fk_qualifier,
		&py_fk_owner, &py_fk_table_name))
		return NULL;

	if (py_pk_qualifier != NULL && py_pk_qualifier != Py_None) {
		if (PyString_Check(py_pk_qualifier) || PyUnicode_Check(py_pk_qualifier)){
			py_pk_qualifier = PyUnicode_FromObject(py_pk_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, 
				"qualifier for table containing primary key must be a string or unicode");
			return NULL;
		}
	}

	if (py_pk_owner != NULL && py_pk_owner != Py_None) {
		if (PyString_Check(py_pk_owner) || PyUnicode_Check(py_pk_owner)){
			py_pk_owner = PyUnicode_FromObject(py_pk_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception,  
				"owner of table containing primary key must be a string or unicode");
			Py_XDECREF(py_pk_qualifier);
			return NULL;
		}
	}

	if (py_pk_table_name != NULL && py_pk_table_name != Py_None) {
		if (PyString_Check(py_pk_table_name) || PyUnicode_Check(py_pk_table_name)){
			py_pk_table_name = PyUnicode_FromObject(py_pk_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, 
				"name of the table that contains primary key must be a string or unicode");
			Py_XDECREF(py_pk_qualifier);
			Py_XDECREF(py_pk_owner);
			return NULL;
		}
	}

	if (py_fk_qualifier != NULL && py_fk_qualifier != Py_None) {
		if (PyString_Check(py_fk_qualifier) || PyUnicode_Check(py_fk_qualifier)){
			py_fk_qualifier = PyUnicode_FromObject(py_fk_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, 
				"qualifier for table containing the foreign key must be a string or unicode");
			Py_XDECREF(py_pk_qualifier);
			Py_XDECREF(py_pk_owner);
			Py_XDECREF(py_pk_table_name);
			return NULL;
		}
	}

	if (py_fk_owner != NULL && py_fk_owner != Py_None) {
		if (PyString_Check(py_fk_owner) || PyUnicode_Check(py_fk_owner)){
			py_fk_owner = PyUnicode_FromObject(py_fk_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, 
				"owner of table containing the foreign key must be a string or unicode");
			Py_XDECREF(py_pk_qualifier);
			Py_XDECREF(py_pk_owner);
			Py_XDECREF(py_pk_table_name);
			Py_XDECREF(py_fk_qualifier);
			return NULL;
		}
	}

	if (py_fk_table_name != NULL && py_fk_table_name != Py_None) {
		if (PyString_Check(py_fk_table_name) || PyUnicode_Check(py_fk_table_name)){
			py_fk_table_name = PyUnicode_FromObject(py_fk_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, 
				"name of the table that contains foreign key must be a string or unicode");
			Py_XDECREF(py_pk_qualifier);
			Py_XDECREF(py_pk_owner);
			Py_XDECREF(py_pk_table_name);
			Py_XDECREF(py_fk_qualifier);
			Py_XDECREF(py_fk_owner);
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_pk_qualifier);
			Py_XDECREF(py_pk_owner);
			Py_XDECREF(py_pk_table_name);
			Py_XDECREF(py_fk_qualifier);
			Py_XDECREF(py_fk_owner);
			Py_XDECREF(py_fk_table_name);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		Py_END_ALLOW_THREADS;

		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_pk_qualifier);
			Py_XDECREF(py_pk_owner);
			Py_XDECREF(py_pk_table_name);
			Py_XDECREF(py_fk_qualifier);
			Py_XDECREF(py_fk_owner);
			Py_XDECREF(py_fk_table_name);

			Py_RETURN_FALSE;
		}

		if(py_pk_qualifier && py_pk_qualifier != Py_None)
			pk_qualifier = getUnicodeDataAsSQLWCHAR(py_pk_qualifier, &isNewBuffer);
		if(py_pk_owner && py_pk_owner != Py_None)
			pk_owner = getUnicodeDataAsSQLWCHAR(py_pk_owner, &isNewBuffer);
		if(py_pk_table_name && py_pk_table_name != Py_None)
			pk_table_name = getUnicodeDataAsSQLWCHAR(py_pk_table_name, &isNewBuffer);
		if(py_fk_qualifier && py_fk_qualifier != Py_None)
			fk_qualifier = getUnicodeDataAsSQLWCHAR(py_fk_qualifier, &isNewBuffer);
		if(py_fk_owner && py_fk_owner != Py_None)
			fk_owner = getUnicodeDataAsSQLWCHAR(py_fk_owner, &isNewBuffer);
		if(py_fk_table_name && py_fk_table_name != Py_None)
			fk_table_name = getUnicodeDataAsSQLWCHAR(py_fk_table_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLForeignKeysW((SQLHSTMT)stmt_res->hstmt, pk_qualifier, SQL_NTS,
						pk_owner, SQL_NTS, pk_table_name, SQL_NTS, fk_qualifier, SQL_NTS,
						fk_owner, SQL_NTS, fk_table_name, SQL_NTS);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(pk_qualifier) PyMem_Del(pk_qualifier);
		    if(pk_owner) PyMem_Del(pk_owner);
		    if(pk_table_name) PyMem_Del(pk_table_name);
		    if(fk_qualifier) PyMem_Del(fk_qualifier);
		    if(fk_owner) PyMem_Del(fk_owner);
		    if(fk_table_name) PyMem_Del(fk_table_name);
		}	
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
											1, NULL, -1, 1);
			Py_XDECREF(py_pk_qualifier);
			Py_XDECREF(py_pk_owner);
			Py_XDECREF(py_pk_table_name);
			Py_XDECREF(py_fk_qualifier);
			Py_XDECREF(py_fk_owner);
			Py_XDECREF(py_fk_table_name);
			PyErr_Clear( );
			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_pk_qualifier);
		Py_XDECREF(py_pk_owner);
		Py_XDECREF(py_pk_table_name);
		Py_XDECREF(py_fk_qualifier);
		Py_XDECREF(py_fk_owner);
		Py_XDECREF(py_fk_table_name);
		return (PyObject *)stmt_res;				  

	} else {
		Py_XDECREF(py_pk_qualifier);
		Py_XDECREF(py_pk_owner);
		Py_XDECREF(py_pk_table_name);
		Py_XDECREF(py_fk_qualifier);
		Py_XDECREF(py_fk_owner);
		Py_XDECREF(py_fk_table_name);
		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.primary_keys
 *
 * ===Description
 * resource ibm_db.primary_keys ( resource connection, string qualifier,
 * string schema, string table-name )
 *
 * Returns a result set listing the primary keys for a table.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema which contains the tables. If schema is NULL,
 * ibm_db.primary_keys() matches the schema for the current connection.
 *
 * ====table-name
 *		The name of the table.
 *
 * ===Return Values
 *
 * Returns a statement resource with a result set containing rows describing the
 * primary keys for the specified table.
 * The result set is composed of the following columns:
 *
 * Column name:: Description
 * TABLE_CAT:: Name of the catalog for the table containing the primary key.
 * The value is NULL if this table does not have catalogs.
 * TABLE_SCHEM:: Name of the schema for the table containing the primary key.
 * TABLE_NAME:: Name of the table containing the primary key.
 * COLUMN_NAME:: Name of the column containing the primary key.
 * KEY_SEQ:: 1-indexed position of the column in the key.
 * PK_NAME:: The name of the primary key.
 */
static PyObject *ibm_db_primary_keys(PyObject *self, PyObject *args)
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *table_name = NULL;
	int rc;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	PyObject *py_conn_res = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_table_name = NULL;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "OOOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_table_name))
		return NULL;

	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_table_name != NULL && py_table_name != Py_None) {
		if (PyString_Check(py_table_name) || PyUnicode_Check(py_table_name)){
			py_table_name = PyUnicode_FromObject(py_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);

			Py_RETURN_FALSE;
		}
		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_table_name && py_table_name != Py_None )
			table_name = getUnicodeDataAsSQLWCHAR(py_table_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;	
		rc = SQLPrimaryKeysW((SQLHSTMT)stmt_res->hstmt, qualifier, SQL_NTS,
			owner, SQL_NTS, table_name, SQL_NTS);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(qualifier) PyMem_Del(qualifier);
		    if(owner) PyMem_Del(owner);
		    if(table_name) PyMem_Del(table_name);
		}
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
				1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);

		return (PyObject *)stmt_res;			 

	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);

		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.procedure_columns
 *
 * ===Description
 * resource ibm_db.procedure_columns ( resource connection, string qualifier,
 * string schema, string procedure, string parameter )
 *
 * Returns a result set listing the parameters for one or more stored procedures
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema which contains the procedures. This parameter accepts a
 * search pattern containing _ and % as wildcards.
 *
 * ====procedure
 *		The name of the procedure. This parameter accepts a search pattern
 * containing _ and % as wildcards.
 *
 * ====parameter
 *		The name of the parameter. This parameter accepts a search pattern
 * containing _ and % as wildcards.
 *		If this parameter is NULL, all parameters for the specified stored
 * procedures are returned.
 *
 * ===Return Values
 *
 * Returns a statement resource with a result set containing rows describing the
 * parameters for the stored procedures matching the specified parameters. The
 * rows are composed of the following columns:
 *
 * Column name::	Description
 * PROCEDURE_CAT:: The catalog that contains the procedure. The value is NULL
 * if this table does not have catalogs.
 * PROCEDURE_SCHEM:: Name of the schema that contains the stored procedure.
 * PROCEDURE_NAME:: Name of the procedure.
 * COLUMN_NAME:: Name of the parameter.
 * COLUMN_TYPE:: An integer value representing the type of the parameter:
 *					  Return value:: Parameter type
 *					  1:: (SQL_PARAM_INPUT)	Input (IN) parameter.
 *					  2:: (SQL_PARAM_INPUT_OUTPUT) Input/output (INOUT)
 *						  parameter.
 *					  3:: (SQL_PARAM_OUTPUT) Output (OUT) parameter.
 * DATA_TYPE:: The SQL data type for the parameter represented as an integer
 * value.
 * TYPE_NAME:: A string representing the data type for the parameter.
 * COLUMN_SIZE:: An integer value representing the size of the parameter.
 * BUFFER_LENGTH:: Maximum number of bytes necessary to store data for this
 * parameter.
 * DECIMAL_DIGITS:: The scale of the parameter, or NULL where scale is not
 * applicable.
 * NUM_PREC_RADIX:: An integer value of either 10 (representing an exact numeric
 * data type), 2 (representing anapproximate numeric data type), or NULL
 * (representing a data type for which radix is not applicable).
 * NULLABLE:: An integer value representing whether the parameter is nullable or
 * not.
 * REMARKS:: Description of the parameter.
 * COLUMN_DEF:: Default value for the parameter.
 * SQL_DATA_TYPE:: An integer value representing the size of the parameter.
 * SQL_DATETIME_SUB:: Returns an integer value representing a datetime subtype
 * code, or NULL for SQL data types to which this does not apply.
 * CHAR_OCTET_LENGTH:: Maximum length in octets for a character data type
 * parameter, which matches COLUMN_SIZE for single-byte character set data, or
 * NULL for non-character data types.
 * ORDINAL_POSITION:: The 1-indexed position of the parameter in the CALL
 * statement.
 * IS_NULLABLE:: A string value where 'YES' means that the parameter accepts or
 * returns NULL values and 'NO' means that the parameter does not accept or
 * return NULL values.
 */
static PyObject *ibm_db_procedure_columns(PyObject *self, PyObject *args)
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *proc_name = NULL;
	SQLWCHAR *column_name = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_proc_name = NULL;
	PyObject *py_column_name = NULL;
	PyObject *py_conn_res = NULL;
	int rc = 0;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "O|OOOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_proc_name, &py_column_name))
		return NULL;

	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_proc_name != NULL && py_proc_name != Py_None) {
		if (PyString_Check(py_proc_name) || PyUnicode_Check(py_proc_name)){
			py_proc_name = PyUnicode_FromObject(py_proc_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}

	if (py_column_name != NULL && py_column_name != Py_None) {
		if (PyString_Check(py_column_name) || PyUnicode_Check(py_column_name)){
			py_column_name = PyUnicode_FromObject(py_column_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "column_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_proc_name);
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_proc_name);
			Py_XDECREF(py_column_name);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_proc_name);
			Py_XDECREF(py_column_name);

			Py_RETURN_FALSE;
		}
		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_proc_name && py_proc_name != Py_None )
			proc_name = getUnicodeDataAsSQLWCHAR(py_proc_name, &isNewBuffer);
		if (py_column_name && py_column_name != Py_None )
			column_name = getUnicodeDataAsSQLWCHAR(py_column_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLProcedureColumnsW((SQLHSTMT)stmt_res->hstmt, qualifier, SQL_NTS, 
			owner, SQL_NTS, proc_name, SQL_NTS, column_name, 
			SQL_NTS);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(qualifier) PyMem_Del(qualifier);
		    if(owner) PyMem_Del(owner);
		    if(proc_name) PyMem_Del(proc_name);
			if(column_name) PyMem_Del(column_name);
		}
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
				1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_proc_name);
			Py_XDECREF(py_column_name);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_proc_name);
		Py_XDECREF(py_column_name);

		return (PyObject *)stmt_res;			
	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_proc_name);
		Py_XDECREF(py_column_name);

		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.procedures
 *
 * ===Description
 * resource ibm_db.procedures ( resource connection, string qualifier,
 * string schema, string procedure )
 *
 * Returns a result set listing the stored procedures registered in a database.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema which contains the procedures. This parameter accepts a
 * search pattern containing _ and % as wildcards.
 *
 * ====procedure
 *		The name of the procedure. This parameter accepts a search pattern
 * containing _ and % as wildcards.
 *
 * ===Return Values
 *
 * Returns a statement resource with a result set containing rows describing the
 * stored procedures matching the specified parameters. The rows are composed of
 * the following columns:
 *
 * Column name:: Description
 * PROCEDURE_CAT:: The catalog that contains the procedure. The value is NULL if
 * this table does not have catalogs.
 * PROCEDURE_SCHEM:: Name of the schema that contains the stored procedure.
 * PROCEDURE_NAME:: Name of the procedure.
 * NUM_INPUT_PARAMS:: Number of input (IN) parameters for the stored procedure.
 * NUM_OUTPUT_PARAMS:: Number of output (OUT) parameters for the stored
 * procedure.
 * NUM_RESULT_SETS:: Number of result sets returned by the stored procedure.
 * REMARKS:: Any comments about the stored procedure.
 * PROCEDURE_TYPE:: Always returns 1, indicating that the stored procedure does
 * not return a return value.
 */
static PyObject *ibm_db_procedures(PyObject *self, PyObject *args)			
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *proc_name = NULL;
	int rc = 0;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	PyObject *py_conn_res = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_proc_name = NULL;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "OOOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_proc_name))
		return NULL;

	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_proc_name != NULL && py_proc_name != Py_None) {
		if (PyString_Check(py_proc_name) || PyUnicode_Check(py_proc_name)){
			py_proc_name = PyUnicode_FromObject(py_proc_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}


	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_proc_name);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_proc_name);

			Py_RETURN_FALSE;
		}
		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_proc_name && py_proc_name != Py_None )
			proc_name = getUnicodeDataAsSQLWCHAR(py_proc_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLProceduresW((SQLHSTMT)stmt_res->hstmt, qualifier, SQL_NTS, owner,
			SQL_NTS, proc_name, SQL_NTS);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(qualifier) PyMem_Del(qualifier);
		    if(owner) PyMem_Del(owner);
		    if(proc_name) PyMem_Del(proc_name);
		}
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
				1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_proc_name);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_proc_name);
		return (PyObject *)stmt_res;				
	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_proc_name);

		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.special_columns
 *
 * ===Description
 * resource ibm_db.special_columns ( resource connection, string qualifier,
 * string schema, string table_name, int scope )
 *
 * Returns a result set listing the unique row identifier columns for a table.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema which contains the tables.
 *
 * ====table_name
 *		The name of the table.
 *
 * ====scope
 *		Integer value representing the minimum duration for which the unique
 * row identifier is valid. This can be one of the following values:
 *
 *		0: Row identifier is valid only while the cursor is positioned on the
 * row. (SQL_SCOPE_CURROW)
 *		1: Row identifier is valid for the duration of the transaction.
 * (SQL_SCOPE_TRANSACTION)
 *		2: Row identifier is valid for the duration of the connection.
 * (SQL_SCOPE_SESSION)
 *
 * ===Return Values
 *
 * Returns a statement resource with a result set containing rows with unique
 * row identifier information for a table.
 * The rows are composed of the following columns:
 *
 * Column name:: Description
 *
 * SCOPE:: Integer value representing the minimum duration for which the unique
 * row identifier is valid.
 *
 *			 0: Row identifier is valid only while the cursor is positioned on
 * the row. (SQL_SCOPE_CURROW)
 *
 *			 1: Row identifier is valid for the duration of the transaction.
 * (SQL_SCOPE_TRANSACTION)
 *
 *			 2: Row identifier is valid for the duration of the connection.
 * (SQL_SCOPE_SESSION)
 *
 * COLUMN_NAME:: Name of the unique column.
 *
 * DATA_TYPE:: SQL data type for the column.
 *
 * TYPE_NAME:: Character string representation of the SQL data type for the
 * column.
 *
 * COLUMN_SIZE:: An integer value representing the size of the column.
 *
 * BUFFER_LENGTH:: Maximum number of bytes necessary to store data from this
 * column.
 *
 * DECIMAL_DIGITS:: The scale of the column, or NULL where scale is not
 * applicable.
 *
 * NUM_PREC_RADIX:: An integer value of either 10 (representing an exact numeric
 * data type), 2 (representing an approximate numeric data type), or NULL
 * (representing a data type for which radix is not applicable).
 *
 * PSEUDO_COLUMN:: Always returns 1.
 */
static PyObject *ibm_db_special_columns(PyObject *self, PyObject *args)
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *table_name = NULL;
	int scope = 0;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	int rc;
	PyObject *py_conn_res = NULL;
	PyObject *py_scope = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_table_name = NULL;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "OOOOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_table_name, &py_scope))
		return NULL;

	if (!NIL_P(py_scope)) {
		if (PyInt_Check(py_scope)) {
			scope = (int) PyInt_AsLong(py_scope);
		} else {
			PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
			return NULL;
		}
	}
	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_table_name != NULL && py_table_name != Py_None) {
		if (PyString_Check(py_table_name) || PyUnicode_Check(py_table_name)){
			py_table_name = PyUnicode_FromObject(py_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);

			Py_RETURN_FALSE;
		}
		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_table_name && py_table_name != Py_None )
			table_name = getUnicodeDataAsSQLWCHAR(py_table_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLSpecialColumnsW((SQLHSTMT)stmt_res->hstmt, SQL_BEST_ROWID, 
			qualifier, SQL_NTS, owner, SQL_NTS, table_name,
			SQL_NTS, scope, SQL_NULLABLE);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(qualifier) PyMem_Del(qualifier);
		    if(owner) PyMem_Del(owner);
		    if(table_name) PyMem_Del(table_name);	
		}
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
				1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);

		return (PyObject *)stmt_res;
	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);

		Py_RETURN_FALSE;

	}
}

/*!# ibm_db.statistics
 *
 * ===Description
 * resource ibm_db.statistics ( resource connection, string qualifier,
 * string schema, string table-name, bool unique )
 *
 * Returns a result set listing the index and statistics for a table.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema that contains the targeted table. If this parameter is NULL,
 * the statistics and indexes are returned for the schema of the current user.
 *
 * ====table_name
 *		The name of the table.
 *
 * ====unique
 *		A boolean value representing the type of index information to return.
 *
 *		False	 Return only the information for unique indexes on the table.
 *
 *		True	  Return the information for all indexes on the table.
 *
 * ===Return Values
 *
 * Returns a statement resource with a result set containing rows describing the
 * statistics and indexes for the base tables matching the specified parameters.
 * The rows are composed of the following columns:
 *
 * Column name:: Description
 * TABLE_CAT:: The catalog that contains the table. The value is NULL if this
 * table does not have catalogs.
 * TABLE_SCHEM:: Name of the schema that contains the table.
 * TABLE_NAME:: Name of the table.
 * NON_UNIQUE:: An integer value representing whether the index prohibits unique
 * values, or whether the row represents statistics on the table itself:
 *
 *					 Return value:: Parameter type
 *					 0 (SQL_FALSE):: The index allows duplicate values.
 *					 1 (SQL_TRUE):: The index values must be unique.
 *					 NULL:: This row is statistics information for the table
 *					 itself.
 *
 * INDEX_QUALIFIER:: A string value representing the qualifier that would have
 * to be prepended to INDEX_NAME to fully qualify the index.
 * INDEX_NAME:: A string representing the name of the index.
 * TYPE:: An integer value representing the type of information contained in
 * this row of the result set:
 *
 *			Return value:: Parameter type
 *			0 (SQL_TABLE_STAT):: The row contains statistics about the table
 *								 itself.
 *			1 (SQL_INDEX_CLUSTERED):: The row contains information about a
 *									  clustered index.
 *			2 (SQL_INDEX_HASH):: The row contains information about a hashed
 *								 index.
 *			3 (SQL_INDEX_OTHER):: The row contains information about a type of
 * index that is neither clustered nor hashed.
 *
 * ORDINAL_POSITION:: The 1-indexed position of the column in the index. NULL if
 * the row contains statistics information about the table itself.
 * COLUMN_NAME:: The name of the column in the index. NULL if the row contains
 * statistics information about the table itself.
 * ASC_OR_DESC:: A if the column is sorted in ascending order, D if the column
 * is sorted in descending order, NULL if the row contains statistics
 * information about the table itself.
 * CARDINALITY:: If the row contains information about an index, this column
 * contains an integer value representing the number of unique values in the
 * index. If the row contains information about the table itself, this column
 * contains an integer value representing the number of rows in the table.
 * PAGES:: If the row contains information about an index, this column contains
 * an integer value representing the number of pages used to store the index. If
 * the row contains information about the table itself, this column contains an
 * integer value representing the number of pages used to store the table.
 * FILTER_CONDITION:: Always returns NULL.
 */ 
static PyObject *ibm_db_statistics(PyObject *self, PyObject *args)
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *table_name = NULL;
	int unique = 0;
	int rc = 0;
	SQLUSMALLINT sql_unique;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	PyObject *py_conn_res = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_table_name = NULL;
	PyObject *py_unique = NULL;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "OOOOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_table_name, &py_unique))
		return NULL;

	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_table_name != NULL && py_table_name != Py_None) {
		if (PyString_Check(py_table_name) || PyUnicode_Check(py_table_name)){
			py_table_name = PyUnicode_FromObject(py_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}

	if (py_unique != NULL && py_unique != Py_None) {
		if (PyBool_Check(py_unique)) {
			if (py_unique == Py_True)
				unique = 1;
			else
				unique = 0;
		}
		else {
			PyErr_SetString(PyExc_Exception, "unique must be a boolean");
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);
		sql_unique = unique;

		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);

			Py_RETURN_FALSE;
		}
		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_table_name && py_table_name != Py_None )
			table_name = getUnicodeDataAsSQLWCHAR(py_table_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLStatisticsW((SQLHSTMT)stmt_res->hstmt, qualifier, SQL_NTS, owner,
			SQL_NTS, table_name, SQL_NTS, sql_unique, SQL_QUICK);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(qualifier) PyMem_Del(qualifier);
		    if(owner) PyMem_Del(owner);
		    if(table_name) PyMem_Del(table_name);
		}
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
				1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);

		return (PyObject *)stmt_res;
	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);

		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.table_privileges
 *
 * ===Description
 * resource ibm_db.table_privileges ( resource connection [, string qualifier
 * [, string schema [, string table_name]]] )
 *
 * Returns a result set listing the tables and associated privileges in a
 * database.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema which contains the tables. This parameter accepts a search
 * pattern containing _ and % as wildcards.
 *
 * ====table_name
 *		The name of the table. This parameter accepts a search pattern
 * containing _ and % as wildcards.
 *
 * ===Return Values
 *
 * Returns a statement resource with a result set containing rows describing
 * the privileges for the tables that match the specified parameters. The rows
 * are composed of the following columns:
 *
 * Column name:: Description
 * TABLE_CAT:: The catalog that contains the table. The value is NULL if this
 * table does not have catalogs.
 * TABLE_SCHEM:: Name of the schema that contains the table.
 * TABLE_NAME:: Name of the table.
 * GRANTOR:: Authorization ID of the user who granted the privilege.
 * GRANTEE:: Authorization ID of the user to whom the privilege was granted.
 * PRIVILEGE:: The privilege that has been granted. This can be one of ALTER,
 * CONTROL, DELETE, INDEX, INSERT, REFERENCES, SELECT, or UPDATE.
 * IS_GRANTABLE:: A string value of "YES" or "NO" indicating whether the grantee
 * can grant the privilege to other users.
 */
static PyObject *ibm_db_table_privileges(PyObject *self, PyObject *args)
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *table_name = NULL;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	int rc;
	PyObject *py_conn_res = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_table_name = NULL;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "O|OOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_table_name))
		return NULL;

	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_table_name != NULL && py_table_name != Py_None) {
		if (PyString_Check(py_table_name) || PyUnicode_Check(py_table_name)){
			py_table_name = PyUnicode_FromObject(py_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			return NULL;
		}

		if (!conn_res) {
			PyErr_SetString(PyExc_Exception,"Connection Resource cannot be found");
			Py_RETURN_FALSE;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);

			Py_RETURN_FALSE;
		}
		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_table_name && py_table_name != Py_None )
			table_name = getUnicodeDataAsSQLWCHAR(py_table_name, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLTablePrivilegesW((SQLHSTMT)stmt_res->hstmt, qualifier, SQL_NTS, 
			owner, SQL_NTS, table_name, SQL_NTS);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(qualifier) PyMem_Del(qualifier);
		    if(owner) PyMem_Del(owner);
		    if(table_name) PyMem_Del(table_name);
		}
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
				1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);

		return (PyObject *)stmt_res;
	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);

		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.tables
 *
 * ===Description
 * resource ibm_db.tables ( resource connection [, string qualifier [, string
 * schema [, string table-name [, string table-type]]]] )
 *
 * Returns a result set listing the tables and associated metadata in a database
 *
 * ===Parameters
 *
 * ====connection
 *		A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
 *
 * ====qualifier
 *		A qualifier for DB2 databases running on OS/390 or z/OS servers. For
 * other databases, pass NULL or an empty string.
 *
 * ====schema
 *		The schema which contains the tables. This parameter accepts a search
 * pattern containing _ and % as wildcards.
 *
 * ====table-name
 *		The name of the table. This parameter accepts a search pattern
 * containing _ and % as wildcards.
 *
 * ====table-type
 *		A list of comma-delimited table type identifiers. To match all table
 * types, pass NULL or an empty string.
 *		Valid table type identifiers include: ALIAS, HIERARCHY TABLE,
 * INOPERATIVE VIEW, NICKNAME, MATERIALIZED QUERY TABLE, SYSTEM TABLE, TABLE,
 * TYPED TABLE, TYPED VIEW, and VIEW.
 *
 * ===Return Values
 *
 * Returns a statement resource with a result set containing rows describing
 * the tables that match the specified parameters.
 * The rows are composed of the following columns:
 *
 * Column name:: Description
 * TABLE_CAT:: The catalog that contains the table. The value is NULL if this
 * table does not have catalogs.
 * TABLE_SCHEMA:: Name of the schema that contains the table.
 * TABLE_NAME:: Name of the table.
 * TABLE_TYPE:: Table type identifier for the table.
 * REMARKS:: Description of the table.
 */
static PyObject *ibm_db_tables(PyObject *self, PyObject *args)
{
	SQLWCHAR *qualifier = NULL;
	SQLWCHAR *owner = NULL;
	SQLWCHAR *table_name = NULL;
	SQLWCHAR *table_type = NULL;
	PyObject *py_qualifier = NULL;
	PyObject *py_owner = NULL;
	PyObject *py_table_name = NULL;
	PyObject *py_table_type = NULL;
	PyObject *py_conn_res;
	conn_handle *conn_res;
	stmt_handle *stmt_res;
	int rc;
	int isNewBuffer;

	if (!PyArg_ParseTuple(args, "O|OOOO", &py_conn_res, &py_qualifier, &py_owner,
		&py_table_name, &py_table_type))
		return NULL;

	if (py_qualifier != NULL && py_qualifier != Py_None) {
		if (PyString_Check(py_qualifier) || PyUnicode_Check(py_qualifier)){
			py_qualifier = PyUnicode_FromObject(py_qualifier);
		}
		else {
			PyErr_SetString(PyExc_Exception, "qualifier must be a string or unicode");
			return NULL;
		}
	}

	if (py_owner != NULL && py_owner != Py_None) {
		if (PyString_Check(py_owner) || PyUnicode_Check(py_owner)){
			py_owner = PyUnicode_FromObject(py_owner);
		}
		else {
			PyErr_SetString(PyExc_Exception, "owner must be a string or unicode");
			Py_XDECREF(py_qualifier);
			return NULL;
		}
	}

	if (py_table_name != NULL && py_table_name != Py_None) {
		if (PyString_Check(py_table_name) || PyUnicode_Check(py_table_name)){
			py_table_name = PyUnicode_FromObject(py_table_name);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table_name must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			return NULL;
		}
	}

	if (py_table_type != NULL && py_table_type != Py_None) {
		if (PyString_Check(py_table_type) || PyUnicode_Check(py_table_type)){
			py_table_type = PyUnicode_FromObject(py_table_type);
		}
		else {
			PyErr_SetString(PyExc_Exception, "table type must be a string or unicode");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_table_type);
			return NULL;
		}

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if (rc == SQL_ERROR) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_table_type);
			
			Py_RETURN_FALSE;
		}
		if (py_qualifier && py_qualifier != Py_None )
			qualifier = getUnicodeDataAsSQLWCHAR(py_qualifier, &isNewBuffer);
		if (py_owner &&  py_owner != Py_None )
			owner = getUnicodeDataAsSQLWCHAR(py_owner, &isNewBuffer);
		if (py_table_name && py_table_name != Py_None )
			table_name = getUnicodeDataAsSQLWCHAR(py_table_name, &isNewBuffer);
		if(py_table_type && py_table_type != Py_None)
			table_type = getUnicodeDataAsSQLWCHAR(py_table_type, &isNewBuffer);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLTablesW((SQLHSTMT)stmt_res->hstmt, qualifier, SQL_NTS, owner,
			SQL_NTS, table_name, SQL_NTS, table_type, SQL_NTS);
		Py_END_ALLOW_THREADS;

		if (isNewBuffer) {
		    if(qualifier) PyMem_Del(qualifier);
		    if(owner) PyMem_Del(owner);
		    if(table_name) PyMem_Del(table_name);
			if(table_type) PyMem_Del(table_type);
		}
		
		if (rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
				1, NULL, -1, 1);
			Py_XDECREF(py_qualifier);
			Py_XDECREF(py_owner);
			Py_XDECREF(py_table_name);
			Py_XDECREF(py_table_type);

			Py_RETURN_FALSE;
		}
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);
		Py_XDECREF(py_table_type);
		
		return (PyObject *)stmt_res;
	} else {
		Py_XDECREF(py_qualifier);
		Py_XDECREF(py_owner);
		Py_XDECREF(py_table_name);
		Py_XDECREF(py_table_type);

		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.commit
 * ===Description
 * bool ibm_db.commit ( resource connection )
 *
 * Commits an in-progress transaction on the specified connection resource and
 * begins a new transaction.
 * Python applications normally default to AUTOCOMMIT mode, so ibm_db.commit()
 * is not necessary unless AUTOCOMMIT has been turned off for the connection
 * resource.
 *
 * Note: If the specified connection resource is a persistent connection, all
 * transactions in progress for all applications using that persistent
 * connection will be committed. For this reason, persistent connections are
 * not recommended for use in applications that require transactions.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid database connection resource variable as returned from
 * ibm_db.connect() or ibm_db.pconnect().
 *
 * ===Return Values
 *
 * Returns TRUE on success or FALSE on failure.
 */
static PyObject *ibm_db_commit(PyObject *self, PyObject *args)			
{
	PyObject *py_conn_res = NULL;
	conn_handle *conn_res;
	int rc;

	if (!PyArg_ParseTuple(args, "O", &py_conn_res))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			return NULL;
		}

		rc = SQLEndTran(SQL_HANDLE_DBC, conn_res->hdbc, SQL_COMMIT);

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											 NULL, -1, 1);
			Py_INCREF(Py_False);
			return Py_False;
		} else {
			Py_INCREF(Py_True);
			return Py_True;
		}
	}
	Py_INCREF(Py_False);
	return Py_False;
}

/* static int _python_ibm_db_do_prepare(SQLHANDLE hdbc, char *stmt_string, stmt_handle *stmt_res, PyObject *options)
*/
static int _python_ibm_db_do_prepare(SQLHANDLE hdbc, SQLWCHAR *stmt, int stmt_size, stmt_handle *stmt_res, PyObject *options)
{
	int rc;

	/* alloc handle and return only if it errors */
	rc = SQLAllocHandle(SQL_HANDLE_STMT, hdbc, &(stmt_res->hstmt));
	if ( rc == SQL_ERROR ) {
		_python_ibm_db_check_sql_errors(hdbc, SQL_HANDLE_DBC, rc, 
										1, NULL, -1, 1);
		return rc;
	}

	/* get the string and its length */
	if (NIL_P(stmt)) {
		PyErr_SetString(PyExc_Exception, 
			"Supplied statement parameter is invalid");
		return rc;
	}

	if ( rc < SQL_SUCCESS ) {
		_python_ibm_db_check_sql_errors(hdbc, SQL_HANDLE_DBC, rc, 1, NULL, -1, 1);
		PyErr_SetString(PyExc_Exception, "Statement prepare Failed: ");
		return rc;
	}

	if (!NIL_P(options)) {
		rc = _python_ibm_db_parse_options( options, SQL_HANDLE_STMT, stmt_res );
		if ( rc == SQL_ERROR ) {
			return rc;
		}
	}

	/* Prepare the stmt. The cursor type requested has already been set in 
	* _python_ibm_db_assign_options 
	*/

	Py_BEGIN_ALLOW_THREADS;
	rc = SQLPrepareW((SQLHSTMT)stmt_res->hstmt, stmt, 
				stmt_size);
	Py_END_ALLOW_THREADS;

	if ( rc == SQL_ERROR ) {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
										1, NULL, -1, 1);
	}
	return rc;
}

/*!# ibm_db.exec
 *
 * ===Description
 * stmt_handle ibm_db.exec ( IBM_DBConnection connection, string statement
 *								[, array options] )
 *
 * Prepares and executes an SQL statement.
 *
 * If you plan to interpolate Python variables into the SQL statement,
 * understand that this is one of the more common security exposures. Consider
 * calling ibm_db.prepare() to prepare an SQL statement with parameter markers	* for input values. Then you can call ibm_db.execute() to pass in the input
 * values and avoid SQL injection attacks.
 *
 * If you plan to repeatedly issue the same SQL statement with different
 * parameters, consider calling ibm_db.:prepare() and ibm_db.execute() to
 * enable the database server to reuse its access plan and increase the
 * efficiency of your database access.
 *
 * ===Parameters
 *
 * ====connection
 *
 *		A valid database connection resource variable as returned from
 * ibm_db.connect() or ibm_db.pconnect().
 *
 * ====statement
 *
 *		An SQL statement. The statement cannot contain any parameter markers.
 *
 * ====options
 *
 *		An dictionary containing statement options. You can use this parameter  * to request a scrollable cursor on database servers that support this
 * functionality.
 *
 *		SQL_ATTR_CURSOR_TYPE
 *			 Passing the SQL_SCROLL_FORWARD_ONLY value requests a forward-only
 *			 cursor for this SQL statement. This is the default type of
 *			 cursor, and it is supported by all database servers. It is also
 *			 much faster than a scrollable cursor.
 *
 *			 Passing the SQL_CURSOR_KEYSET_DRIVEN value requests a scrollable  *			 cursor for this SQL statement. This type of cursor enables you to
 *			 fetch rows non-sequentially from the database server. However, it
 *			 is only supported by DB2 servers, and is much slower than
 *			 forward-only cursors.
 *
 * ===Return Values
 *
 * Returns a stmt_handle resource if the SQL statement was issued
 * successfully, or FALSE if the database failed to execute the SQL statement.
 */
static PyObject *ibm_db_exec(PyObject *self, PyObject *args)			
{
	PyObject *options = NULL;
	PyObject *py_conn_res = NULL;
	stmt_handle *stmt_res;
	conn_handle *conn_res;
	int rc;
	int isNewBuffer;
	char* return_str = NULL; /* This variable is used by 
							 * _python_ibm_db_check_sql_errors to return err 
							 * strings 
							 */
	SQLWCHAR *stmt = NULL;
	PyObject *py_stmt = NULL;

	/* This function basically is a wrap of the _python_ibm_db_do_prepare and 
	* _python_ibm_db_Execute_stmt 
	* After completing statement execution, it returns the statement resource 
	*/

	if (!PyArg_ParseTuple(args, "OO|O", &py_conn_res, &py_stmt,  &options))
		return NULL;

	if (py_stmt != NULL && py_stmt != Py_None) {
		if (PyString_Check(py_stmt) || PyUnicode_Check(py_stmt)){
			py_stmt = PyUnicode_FromObject(py_stmt);
		}
		else {
			PyErr_SetString(PyExc_Exception, "statement must be a string or unicode");
			return NULL;
		}
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			Py_XDECREF(py_stmt);
			return NULL;
		}

		return_str = ALLOC_N(char, DB2_MAX_ERR_MSG_LEN);
		if ( return_str == NULL ) {
			PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
			Py_XDECREF(py_stmt);
			return NULL;
		}

		memset(return_str, 0, DB2_MAX_ERR_MSG_LEN);

		_python_ibm_db_clear_stmt_err_cache();

		stmt_res = _ibm_db_new_stmt_struct(conn_res);

		/* Allocates the stmt handle */
		/* returns the stat_handle back to the calling function */
		rc = SQLAllocHandle(SQL_HANDLE_STMT, conn_res->hdbc, &(stmt_res->hstmt));
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1,
				NULL, -1, 1);
			PyMem_Del(return_str);
			Py_XDECREF(py_stmt);
			return NULL;
		}

		if (!NIL_P(options)) {
			rc = _python_ibm_db_parse_options(options, SQL_HANDLE_STMT, stmt_res);
			if ( rc == SQL_ERROR ) {
				Py_XDECREF(py_stmt);
				return NULL;
			}
		}
		if (py_stmt != NULL && py_stmt != Py_None){
			stmt = getUnicodeDataAsSQLWCHAR(py_stmt, &isNewBuffer);
     		}

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLExecDirectW((SQLHSTMT)stmt_res->hstmt, stmt, SQL_NTS);
		Py_END_ALLOW_THREADS;

		if ( rc < SQL_SUCCESS ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, -1, 
				1, return_str, DB2_ERRMSG, 
				stmt_res->errormsg_recno_tracker);
			SQLFreeHandle( SQL_HANDLE_STMT, stmt_res->hstmt );
			/* TODO: Object freeing */
			/* free(stmt_res); */
			if (isNewBuffer) {
				if(stmt) PyMem_Del(stmt);
			}
			Py_XDECREF(py_stmt);
			PyMem_Del(return_str);
			return NULL;
		}
		if (isNewBuffer) {
			if(stmt) PyMem_Del(stmt);
		}	
		PyMem_Del(return_str);
		Py_XDECREF(py_stmt);
		return (PyObject *)stmt_res;				 
	}
	Py_XDECREF(py_stmt);
	return NULL;
}

/*!# ibm_db.free_result
 *
 * ===Description
 * bool ibm_db.free_result ( resource stmt )
 *
 * Frees the system and database resources that are associated with a result
 * set. These resources are freed implicitly when a script finishes, but you
 * can call ibm_db.free_result() to explicitly free the result set resources
 * before the end of the script.
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid statement resource.
 *
 * ===Return Values
 *
 * Returns TRUE on success or FALSE on failure.
 */
static PyObject *ibm_db_free_result(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	stmt_handle *stmt_res;
	int rc = 0;

	if (!PyArg_ParseTuple(args, "O", &py_stmt_res))
		return NULL;
	
	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}
		if ( stmt_res->hstmt ) {
			/* Free any cursors that might have been allocated in a previous call 
			* to SQLExecute 
			*/
			Py_BEGIN_ALLOW_THREADS;
			rc = SQLFreeStmt((SQLHSTMT)stmt_res->hstmt, SQL_CLOSE);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
												rc, 1, NULL, -1, 1);
				PyErr_Clear( );	
				Py_RETURN_FALSE;
			}
		}
		_python_ibm_db_free_result_struct(stmt_res);
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
		return NULL;
	}
	Py_INCREF(Py_True);
	return Py_True;
}

/*
 * static PyObject *_python_ibm_db_prepare_helper(conn_handle *conn_res, PyObject *py_stmt, PyObject *options)
 *
 */
static PyObject *_python_ibm_db_prepare_helper(conn_handle *conn_res, PyObject *py_stmt, PyObject *options)
{
	stmt_handle *stmt_res;
	int rc;
	char error[DB2_MAX_ERR_MSG_LEN];
	SQLWCHAR *stmt = NULL;
	int stmt_size = 0;
	int isNewBuffer;

	if (!conn_res->handle_active) {
		PyErr_SetString(PyExc_Exception, "Connection is not active");
		return NULL;
	}

	if (py_stmt != NULL && py_stmt != Py_None) {
		if (PyString_Check(py_stmt) || PyUnicode_Check(py_stmt)) {
			py_stmt = PyUnicode_FromObject(py_stmt);
			if (py_stmt != NULL &&  py_stmt != Py_None) {
				stmt_size = PyUnicode_GetSize(py_stmt);
			} else {
				PyErr_SetString(PyExc_Exception, "Error occure during processing of statement");
				return NULL;	
			}
		}
		else {
			PyErr_SetString(PyExc_Exception, "statement must be a string or unicode");
			return NULL;
		}
	}

	_python_ibm_db_clear_stmt_err_cache();

	/* Initialize stmt resource members with default values. */
	/* Parsing will update options if needed */

	stmt_res = _ibm_db_new_stmt_struct(conn_res);

	/* Allocates the stmt handle */
	/* Prepares the statement */
	/* returns the stat_handle back to the calling function */
	if( py_stmt && py_stmt != Py_None)
		stmt = getUnicodeDataAsSQLWCHAR(py_stmt, &isNewBuffer);
		
	rc = _python_ibm_db_do_prepare(conn_res->hdbc, stmt, stmt_size, stmt_res, options);
	if (isNewBuffer) {
		if(stmt) PyMem_Del(stmt);
	}
	
	if ( rc < SQL_SUCCESS ) {
		sprintf(error, "Statement Prepare Failed: %s", IBM_DB_G(__python_stmt_err_msg));
		Py_XDECREF(py_stmt);
		return NULL;
	}
	Py_XDECREF(py_stmt);
	return (PyObject *)stmt_res;		
}

/*!# ibm_db.prepare
 *
 * ===Description
 * IBMDB_Statement ibm_db.prepare ( IBM_DBConnection connection,
 *								  string statement [, array options] )
 *
 * ibm_db.prepare() creates a prepared SQL statement which can include 0 or
 * more parameter markers (? characters) representing parameters for input,
 * output, or input/output. You can pass parameters to the prepared statement
 * using ibm_db.bind_param(), or for input values only, as an array passed to
 * ibm_db.execute().
 *
 * There are three main advantages to using prepared statements in your
 * application:
 *		* Performance: when you prepare a statement, the database server
 *		 creates an optimized access plan for retrieving data with that
 *		 statement. Subsequently issuing the prepared statement with
 *		 ibm_db.execute() enables the statements to reuse that access plan
 *		 and avoids the overhead of dynamically creating a new access plan
 *		 for every statement you issue.
 *		* Security: when you prepare a statement, you can include parameter
 *		 markers for input values. When you execute a prepared statement
 *		 with input values for placeholders, the database server checks each
 *		 input value to ensure that the type matches the column definition or
 *		 parameter definition.
 *		* Advanced functionality: Parameter markers not only enable you to
 *		 pass input values to prepared SQL statements, they also enable you
 *		 to retrieve OUT and INOUT parameters from stored procedures using
 *		 ibm_db.bind_param().
 *
 * ===Parameters
 * ====connection
 *
 *		A valid database connection resource variable as returned from
 *		ibm_db.connect() or ibm_db.pconnect().
 *
 * ====statement
 *
 *		An SQL statement, optionally containing one or more parameter markers.
 *
 * ====options
 *
 *		An dictionary containing statement options. You can use this parameter
 *		to request a scrollable cursor on database servers that support this
 *		functionality.
 *
 *		SQL_ATTR_CURSOR_TYPE
 *			 Passing the SQL_SCROLL_FORWARD_ONLY value requests a forward-only
 *			 cursor for this SQL statement. This is the default type of
 *			 cursor, and it is supported by all database servers. It is also
 *			 much faster than a scrollable cursor.
 *			 Passing the SQL_CURSOR_KEYSET_DRIVEN value requests a scrollable  
 *			 cursor for this SQL statement. This type of cursor enables you
 *			 to fetch rows non-sequentially from the database server. However, 
 *			 it is only supported by DB2 servers, and is much slower than
 *			 forward-only cursors.
 *
 * ===Return Values
 * Returns a IBM_DBStatement object if the SQL statement was successfully
 * parsed and prepared by the database server. Returns FALSE if the database
 * server returned an error. You can determine which error was returned by
 * calling ibm_db.stmt_error() or ibm_db.stmt_errormsg().
 */					 
static PyObject *ibm_db_prepare(PyObject *self, PyObject *args)			
{
	PyObject *py_conn_res = NULL;
	PyObject *options = NULL;
	conn_handle *conn_res;
	
	PyObject *py_stmt = NULL;
	
	if (!PyArg_ParseTuple(args, "OO|O", &py_conn_res, &py_stmt, &options))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
		return _python_ibm_db_prepare_helper(conn_res, py_stmt, options);	 
	}

	return NULL;
}

/*	static param_node* build_list( stmt_res, param_no, data_type, precision, scale, nullable )
*/
static param_node* build_list( stmt_handle *stmt_res, int param_no, SQLSMALLINT data_type, SQLUINTEGER precision, SQLSMALLINT scale, SQLSMALLINT nullable )
{
	param_node *tmp_curr = NULL, *curr = stmt_res->head_cache_list, *prev = NULL;

	/* Allocate memory and make new node to be added */
	tmp_curr = ALLOC(param_node);
	memset(tmp_curr, 0, sizeof(param_node));
	/* assign values */
	tmp_curr->data_type = data_type;
	tmp_curr->param_size = precision;
	tmp_curr->nullable = nullable;
	tmp_curr->scale = scale;
	tmp_curr->param_num = param_no;
	tmp_curr->file_options = SQL_FILE_READ;
	tmp_curr->param_type = SQL_PARAM_INPUT;

	while ( curr != NULL ) {
		prev = curr;
		curr = curr->next;
	}

	if (stmt_res->head_cache_list == NULL) {
		stmt_res->head_cache_list = tmp_curr;
	} else {
		prev->next = tmp_curr;
	}

	tmp_curr->next = curr;

	return tmp_curr;
}

/*	static int _python_ibm_db_bind_data( stmt_handle *stmt_res, param_node *curr, PyObject *bind_data )
*/
static int _python_ibm_db_bind_data( stmt_handle *stmt_res, param_node *curr, PyObject *bind_data)
{
	int rc;
	SQLSMALLINT valueType = 0;
	SQLPOINTER	paramValuePtr;
#if  PY_MAJOR_VERSION < 3
	Py_ssize_t buffer_len = 0;
#endif
	int param_length;
	
	/* Have to use SQLBindFileToParam if PARAM is type PARAM_FILE */
	/*** Need to fix this***/
	if ( curr->param_type == PARAM_FILE) {
		PyObject *FileNameObj = NULL;
		/* Only string types can be bound */
		if (PyString_Check(bind_data)) {
			if (PyUnicode_Check(bind_data)) {
				FileNameObj = PyUnicode_AsASCIIString(bind_data);
				if (FileNameObj == NULL) {
					return SQL_ERROR;
				}
			}
		} else {
			return SQL_ERROR;
		}
		curr->bind_indicator = 0;
		if(curr->svalue != NULL) {
			PyMem_Del(curr->svalue);
			curr->svalue = NULL;
		}
		if (FileNameObj != NULL) {
			curr->svalue = PyBytes_AsString(FileNameObj);
		} else {
			curr->svalue = PyBytes_AsString(bind_data);
		}
		curr->ivalue = strlen(curr->svalue);
		curr->svalue = memcpy(PyMem_Malloc((sizeof(char))*(curr->ivalue+1)), curr->svalue, curr->ivalue);
		curr->svalue[curr->ivalue] = '\0';
		Py_XDECREF(FileNameObj);
		valueType = (SQLSMALLINT) curr->ivalue;
		/* Bind file name string */

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLBindFileToParam((SQLHSTMT)stmt_res->hstmt, curr->param_num,
					curr->data_type, (SQLCHAR*)curr->svalue,
					(SQLSMALLINT*)&(curr->ivalue), &(curr->file_options), 
					(SQLSMALLINT) curr->ivalue, &(curr->bind_indicator));
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
											 rc, 1, NULL, -1, 1);
		}
		return rc;
	}
	
	switch(TYPE(bind_data)) {
		case PYTHON_FIXNUM:
			if(curr->data_type == SQL_BIGINT || curr->data_type == SQL_DECIMAL ){
				PyObject *tempobj = NULL;
#if  PY_MAJOR_VERSION >= 3
			       	PyObject *tempobj2 = NULL;
#endif
				tempobj = PyObject_Str(bind_data);
#if  PY_MAJOR_VERSION >= 3
				tempobj2 = PyUnicode_AsASCIIString(tempobj);
				Py_XDECREF(tempobj);
				tempobj = tempobj2;
#endif	
				curr->svalue = PyBytes_AsString(tempobj);
				curr->ivalue = strlen(curr->svalue);
				curr->svalue = memcpy(PyMem_Malloc((sizeof(char))*(curr->ivalue+1)), curr->svalue, curr->ivalue);
				curr->svalue[curr->ivalue] = '\0'; 
				curr->bind_indicator = curr->ivalue;

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
					curr->param_type, SQL_C_CHAR, curr->data_type,
					curr->param_size, curr->scale, curr->svalue, curr->param_size, NULL);
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ){
					_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
												rc, 1, NULL, -1, 1);
				}
				Py_XDECREF(tempobj);
			}
			else{
				curr->ivalue = (SQLINTEGER) PyLong_AsLong(bind_data);

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
							curr->param_type, SQL_C_LONG, curr->data_type,
							curr->param_size, curr->scale, &curr->ivalue, 0, NULL);
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
												rc, 1, NULL, -1, 1);
				}
				curr->data_type = SQL_C_LONG;
			}
			break;

		/* Convert BOOLEAN types to LONG for DB2 / Cloudscape */
		case PYTHON_FALSE:
			curr->ivalue = 0;

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
						curr->param_type, SQL_C_LONG, curr->data_type, curr->param_size,
						curr->scale, &curr->ivalue, 0, NULL);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
													rc, 1, NULL, -1, 1);
			}
			curr->data_type = SQL_C_LONG;
			break;

		case PYTHON_TRUE:
			curr->ivalue = 1;

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
			curr->param_type, SQL_C_LONG, curr->data_type, curr->param_size,
						curr->scale, &curr->ivalue, 0, NULL);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
												rc, 1, NULL, -1, 1);
			}
			curr->data_type = SQL_C_LONG;
			break;

		case PYTHON_FLOAT:
			curr->fvalue = PyFloat_AsDouble(bind_data);
			
			Py_BEGIN_ALLOW_THREADS;
			rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
					curr->param_type, SQL_C_DOUBLE, curr->data_type, curr->param_size,
					curr->scale, &curr->fvalue, 0, NULL);
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
												rc, 1, NULL, -1, 1);
			}
			curr->data_type = SQL_C_DOUBLE;
			break;

		case PYTHON_UNICODE:
			{
				int isNewBuffer;
				if(PyObject_CheckBuffer(bind_data) && (curr->data_type == SQL_BLOB || curr->data_type == SQL_BINARY || curr->data_type == SQL_VARBINARY)) {
#if  PY_MAJOR_VERSION >= 3
					Py_buffer tmp_buffer;
					PyObject_GetBuffer(bind_data, &tmp_buffer, PyBUF_SIMPLE);
					curr->uvalue = tmp_buffer.buf;
					curr->ivalue = tmp_buffer.len;
#else					
					PyObject_AsReadBuffer(bind_data, (const void **) &(curr->uvalue), &buffer_len);
					curr->ivalue = buffer_len;
#endif
				} else {
					if(curr->uvalue != NULL) {
						PyMem_Del(curr->uvalue);
						curr->uvalue = NULL;
					}
					curr->uvalue = getUnicodeDataAsSQLWCHAR(bind_data, &isNewBuffer);
					curr->ivalue = PyUnicode_GetSize(bind_data);
					curr->ivalue = curr->ivalue * sizeof(SQLWCHAR);
				}
				param_length = curr->ivalue;
				if (curr->size != 0) {
					curr->ivalue = (curr->size + 1) * sizeof(SQLWCHAR);
				}

				if (curr->param_type == SQL_PARAM_OUTPUT || curr->param_type == SQL_PARAM_INPUT_OUTPUT) {
					if (curr->size == 0) {
						if ((curr->data_type == SQL_BLOB) || (curr->data_type == SQL_CLOB) || (curr->data_type == SQL_BINARY)
#ifndef PASE /* i5/OS SQL_LONGVARBINARY is SQL_VARBINARY */
								|| (curr->data_type == SQL_LONGVARBINARY)
#endif /* PASE */
								|| (curr->data_type == SQL_VARBINARY) || (curr->data_type == SQL_XML)) {
							if (curr->ivalue <= curr->param_size) {
								curr->ivalue = curr->param_size + sizeof(SQLWCHAR);
							}
						} else {
							if (curr->ivalue <= (curr->param_size * sizeof(SQLWCHAR))) {
								curr->ivalue = (curr->param_size + 1) * sizeof(SQLWCHAR);
							}
						}
					}
				}
				
				if (isNewBuffer == 0 ){
					/* actually make a copy, since this will uvalue will be freed explicitly */
					SQLWCHAR* tmp = (SQLWCHAR*)ALLOC_N(SQLWCHAR, curr->ivalue + 1);
					memcpy(tmp, curr->uvalue, (param_length + sizeof(SQLWCHAR)));
					curr->uvalue = tmp;
				} else if (param_length <= curr->param_size) {
					SQLWCHAR* tmp = (SQLWCHAR*)ALLOC_N(SQLWCHAR, curr->ivalue + 1);
					memcpy(tmp, curr->uvalue, (param_length + sizeof(SQLWCHAR)));
					PyMem_Del(curr->uvalue);
					curr->uvalue = tmp;
				}
				
				switch( curr->data_type){
					case SQL_CLOB:
					case SQL_DBCLOB:
						if(curr->param_type == SQL_PARAM_OUTPUT || curr->param_type == SQL_PARAM_INPUT_OUTPUT){
							curr->bind_indicator =  param_length;
							paramValuePtr = (SQLPOINTER)curr->uvalue;
						} else {
							curr->bind_indicator = SQL_DATA_AT_EXEC;	
#ifndef PASE
							paramValuePtr = (SQLPOINTER)(curr);
#else
							paramValuePtr = (SQLPOINTER)&(curr);
#endif
						}
						valueType = SQL_C_WCHAR;
						break;
					
					case SQL_BLOB:
						if (curr->param_type == SQL_PARAM_OUTPUT ||curr->param_type == SQL_PARAM_INPUT_OUTPUT) {
							curr->bind_indicator = param_length;
							paramValuePtr = (SQLPOINTER)curr;
						} else {
							curr->bind_indicator = SQL_DATA_AT_EXEC;
#ifndef PASE
							paramValuePtr = (SQLPOINTER)(curr);
#else
							paramValuePtr = (SQLPOINTER)&(curr);
#endif
						}
						valueType = SQL_C_BINARY;
						break;
					
					case SQL_BINARY:
#ifndef PASE /* i5/OS SQL_LONGVARBINARY is SQL_VARBINARY */
					case SQL_LONGVARBINARY:
#endif /* PASE */
					case SQL_VARBINARY:
						/* account for bin_mode settings as well */
						curr->bind_indicator = param_length;
						valueType = SQL_C_BINARY;
						paramValuePtr = (SQLPOINTER)curr->uvalue;
						break;

					case SQL_XML:
						curr->bind_indicator = param_length;
						paramValuePtr = (SQLPOINTER)curr->uvalue;
						valueType = SQL_C_WCHAR;
						break;
					case SQL_TYPE_TIMESTAMP:
						valueType = SQL_C_WCHAR;
						curr->bind_indicator = SQL_NTS;
						if(curr->uvalue[10] == 'T'){
							curr->uvalue[10] = ' ';
						}
						paramValuePtr = (SQLPOINTER)(curr->uvalue);
						break;
					default:
						valueType = SQL_C_WCHAR;
						curr->bind_indicator = param_length;
						paramValuePtr = (SQLPOINTER)(curr->uvalue);
				}

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindParameter(stmt_res->hstmt, curr->param_num, curr->param_type, valueType, curr->data_type, curr->param_size, curr->scale, paramValuePtr, curr->ivalue, &(curr->bind_indicator));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
				}
				curr->data_type = valueType;
			}
			break;
		
		case PYTHON_STRING:
			{
				char* tmp;
				if (PyObject_CheckBuffer(bind_data) && (curr->data_type == SQL_BLOB || curr->data_type == SQL_BINARY
										 || curr->data_type == SQL_VARBINARY) ) {
#if  PY_MAJOR_VERSION >= 3
					Py_buffer tmp_buffer;
					PyObject_GetBuffer(bind_data, &tmp_buffer, PyBUF_SIMPLE);
					curr->svalue = tmp_buffer.buf;
					curr->ivalue = tmp_buffer.len;
#else
					PyObject_AsReadBuffer(bind_data, (const void **) &(curr->svalue), &buffer_len);
					curr->ivalue = buffer_len;
#endif
				} else {
					if(curr->svalue != NULL) {
						PyMem_Del(curr->svalue);
						curr->svalue = NULL;
					}
					curr->svalue = PyBytes_AsString(bind_data);   /** It is PyString_AsString() in PY_MAJOR_VERSION<3, and code execution will not come here in PY_MAJOR_VERSION>=3 **/
					curr->ivalue = strlen(curr->svalue);
				}
				param_length = curr->ivalue;
				/*
				* An extra parameter is given by the client to pick the size of the 
				* string returned. The string is then truncate past that size.	
				* If no size is given then use BUFSIZ to return the string.
				*/
				if (curr->size != 0) {
					curr->ivalue = curr->size;
				}
	            
				if (curr->param_type == SQL_PARAM_OUTPUT || curr->param_type == SQL_PARAM_INPUT_OUTPUT) {
					if (curr->size == 0) {
						if (curr->ivalue <= curr->param_size) {
							curr->ivalue = curr->param_size + 1;
						}
					}
				}
				tmp = ALLOC_N(char, curr->ivalue+1);
				curr->svalue = memcpy(tmp, curr->svalue, param_length);
				curr->svalue[param_length] = '\0';
	
				switch ( curr->data_type ) {
					case SQL_CLOB:
					case SQL_DBCLOB:
						if (curr->param_type == SQL_PARAM_OUTPUT || 
							curr->param_type == SQL_PARAM_INPUT_OUTPUT) {
							curr->bind_indicator = param_length;
							paramValuePtr = (SQLPOINTER)curr->svalue;
						} else {
							curr->bind_indicator = SQL_DATA_AT_EXEC;
							/* The correct dataPtr will be set during SQLPutData with 
							* the len from this struct 
							*/
#ifndef PASE
							paramValuePtr = (SQLPOINTER)(curr);
#else
							paramValuePtr = (SQLPOINTER)&(curr);
#endif
						}
						valueType = SQL_C_CHAR;
						break;

					case SQL_BLOB:
						if (curr->param_type == SQL_PARAM_OUTPUT || 
							curr->param_type == SQL_PARAM_INPUT_OUTPUT) {
							curr->ivalue = curr->ivalue -1;
							curr->bind_indicator = param_length;
							paramValuePtr = (SQLPOINTER)curr;
						} else {
							curr->bind_indicator = SQL_DATA_AT_EXEC;
#ifndef PASE
							paramValuePtr = (SQLPOINTER)(curr);
#else
							paramValuePtr = (SQLPOINTER)&(curr);
#endif
						}
						valueType = SQL_C_BINARY;
						break;
	
					case SQL_BINARY:
#ifndef PASE /* i5/OS SQL_LONGVARBINARY is SQL_VARBINARY */
					case SQL_LONGVARBINARY:
#endif /* PASE */
					case SQL_VARBINARY:
					case SQL_XML:
						/* account for bin_mode settings as well */
						curr->bind_indicator = curr->ivalue;
						if (curr->param_type == SQL_PARAM_OUTPUT || curr->param_type == SQL_PARAM_INPUT_OUTPUT) {
							curr->ivalue = curr->ivalue - 1;
							curr->bind_indicator = param_length;
						}
						
						valueType = SQL_C_BINARY;
						paramValuePtr = (SQLPOINTER)curr->svalue;
						break;

						/* This option should handle most other types such as DATE, 
						* VARCHAR etc 
						*/
					case SQL_TYPE_TIMESTAMP:
						valueType = SQL_C_CHAR;
						curr->bind_indicator = curr->ivalue;
						if (curr->param_type == SQL_PARAM_OUTPUT || curr->param_type == SQL_PARAM_INPUT_OUTPUT) {
							curr->bind_indicator = SQL_NTS;
						}
						if(curr->svalue[10] == 'T'){
							curr->svalue[10] = ' ';
						}
						paramValuePtr = (SQLPOINTER)(curr->svalue);
						break;
					default:
						valueType = SQL_C_CHAR;
						curr->bind_indicator = curr->ivalue;
						if (curr->param_type == SQL_PARAM_OUTPUT || curr->param_type == SQL_PARAM_INPUT_OUTPUT) {
							curr->bind_indicator = SQL_NTS;
						}
						paramValuePtr = (SQLPOINTER)(curr->svalue);
				}

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
					curr->param_type, valueType, curr->data_type, curr->param_size,
					curr->scale, paramValuePtr, curr->ivalue, &(curr->bind_indicator));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
												rc, 1, NULL, -1, 1);
				}
				curr->data_type = valueType;
			}
			break;

		case PYTHON_DECIMAL:
			if (curr->data_type == SQL_DECIMAL || curr->data_type == SQL_DECFLOAT) {
				PyObject *tempobj = NULL;
#if  PY_MAJOR_VERSION >= 3
			        PyObject *tempobj2 = NULL;
#endif
				if(curr->svalue != NULL) {
					PyMem_Del(curr->svalue);
					curr->svalue = NULL;
				}
				tempobj = PyObject_Str(bind_data);
#if PY_MAJOR_VERSION >= 3
				tempobj2 = PyUnicode_AsASCIIString(tempobj);
				Py_XDECREF(tempobj);
				tempobj = tempobj2;
#endif
				curr->svalue = PyBytes_AsString(tempobj);
				curr->ivalue = strlen(curr->svalue);
				curr->svalue = estrdup(curr->svalue);
				curr->svalue[curr->ivalue] = '\0'; 
				valueType = SQL_C_CHAR;
				paramValuePtr = (SQLPOINTER)(curr->svalue);
				curr->bind_indicator = curr->ivalue;

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLBindParameter(stmt_res->hstmt, curr->param_num, curr->param_type, valueType, curr->data_type, curr->param_size, curr->scale, paramValuePtr, curr->ivalue, &(curr->bind_indicator));
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT,rc, 1, NULL, -1, 1);
				}
				curr->data_type = valueType;
				Py_XDECREF(tempobj);
				break;
			}


		case PYTHON_DATE:
			curr->date_value = ALLOC(DATE_STRUCT);
			curr->date_value->year = PyDateTime_GET_YEAR(bind_data);
			curr->date_value->month = PyDateTime_GET_MONTH(bind_data);
			curr->date_value->day = PyDateTime_GET_DAY(bind_data);

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
				curr->param_type, SQL_C_TYPE_DATE, curr->data_type, curr->param_size,
				curr->scale, curr->date_value, curr->ivalue, &(curr->bind_indicator));
			Py_END_ALLOW_THREADS;
			break;

		case PYTHON_TIME:
			curr->time_value = ALLOC(TIME_STRUCT);
			curr->time_value->hour = PyDateTime_TIME_GET_HOUR(bind_data);
			curr->time_value->minute = PyDateTime_TIME_GET_MINUTE(bind_data);
			curr->time_value->second = PyDateTime_TIME_GET_SECOND(bind_data);

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
				curr->param_type, SQL_C_TYPE_TIME, curr->data_type, curr->param_size,
				curr->scale, curr->time_value, curr->ivalue, &(curr->bind_indicator));
			Py_END_ALLOW_THREADS;
			break;

		case PYTHON_TIMESTAMP:
			curr->ts_value = ALLOC(TIMESTAMP_STRUCT);
			curr->ts_value->year = PyDateTime_GET_YEAR(bind_data);
			curr->ts_value->month = PyDateTime_GET_MONTH(bind_data);
			curr->ts_value->day = PyDateTime_GET_DAY(bind_data);
			curr->ts_value->hour = PyDateTime_DATE_GET_HOUR(bind_data);
			curr->ts_value->minute = PyDateTime_DATE_GET_MINUTE(bind_data);
			curr->ts_value->second = PyDateTime_DATE_GET_SECOND(bind_data);
			curr->ts_value->fraction = PyDateTime_DATE_GET_MICROSECOND(bind_data) * 1000;

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
				curr->param_type, SQL_C_TYPE_TIMESTAMP, curr->data_type, curr->param_size,
				curr->scale, curr->ts_value, curr->ivalue, &(curr->bind_indicator));
			Py_END_ALLOW_THREADS;
			break;

		case PYTHON_NIL:
			curr->ivalue = SQL_NULL_DATA;

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLBindParameter(stmt_res->hstmt, curr->param_num,
				curr->param_type, SQL_C_DEFAULT, curr->data_type, curr->param_size,
				curr->scale, &curr->ivalue, 0, (SQLLEN *)&(curr->ivalue));
			Py_END_ALLOW_THREADS;

			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
											rc, 1, NULL, -1, 1);
			}
			break;
			
		default:
			return SQL_ERROR;
	}
	return rc;
}

/* static int _python_ibm_db_execute_helper2(stmt_res, data, int bind_cmp_list)
	*/
static int _python_ibm_db_execute_helper2(stmt_handle *stmt_res, PyObject *data, int bind_cmp_list, int bind_params)
{
	int rc = SQL_SUCCESS;
	param_node *curr = NULL;	/* To traverse the list */
	PyObject *bind_data;		 /* Data value from symbol table */
	char error[DB2_MAX_ERR_MSG_LEN];

	/* Used in call to SQLDescribeParam if needed */
	SQLSMALLINT param_no;
	SQLSMALLINT data_type;
	SQLUINTEGER precision;
	SQLSMALLINT scale;
	SQLSMALLINT nullable;

	/* This variable means that we bind the complete list of params cached */
	/* The values used are fetched from the active symbol table */
	/* TODO: Enhance this part to check for stmt_res->file_param */
	/* If this flag is set, then use SQLBindParam, else use SQLExtendedBind */
	if ( bind_cmp_list ) {
		/* Bind the complete list sequentially */
		/* Used when no parameters array is passed in */
		curr = stmt_res->head_cache_list;

		while (curr != NULL ) {
			/* Fetch data from symbol table */
			if (curr->param_type == PARAM_FILE)
				bind_data = curr->var_pyvalue;
			else {
				bind_data = curr->var_pyvalue;
			}
			if (bind_data == NULL)
				return -1;
				
			rc = _python_ibm_db_bind_data( stmt_res, curr, bind_data);
			if ( rc == SQL_ERROR ) {
				sprintf(error, "Binding Error 1: %s", 
						IBM_DB_G(__python_stmt_err_msg));
				PyErr_SetString(PyExc_Exception, error);
				return rc;
			}
			curr = curr->next;
		}
		return 0;
	} else {
		/* Bind only the data value passed in to the Current Node */
		if ( data != NULL ) {
			if ( bind_params ) {
				/* This condition applies if the parameter has not been
				* bound using ibm_db.bind_param. Need to describe the
				* parameter and then bind it.
				*/
				param_no = ++stmt_res->num_params;

				Py_BEGIN_ALLOW_THREADS;
				rc = SQLDescribeParam((SQLHSTMT)stmt_res->hstmt, param_no,
					(SQLSMALLINT*)&data_type, &precision, (SQLSMALLINT*)&scale,
					(SQLSMALLINT*)&nullable);
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT,
												rc, 1, NULL, -1, 1);
					sprintf(error, "Describe Param Failed: %s", 
							IBM_DB_G(__python_stmt_err_msg));
					PyErr_SetString(PyExc_Exception, error);
					return rc;
				}

				curr = build_list(stmt_res, param_no, data_type, precision, 
							  scale, nullable);
				rc = _python_ibm_db_bind_data( stmt_res, curr, data);
				if ( rc == SQL_ERROR ) {
					sprintf(error, "Binding Error 2: %s", 
							IBM_DB_G(__python_stmt_err_msg));
					PyErr_SetString(PyExc_Exception, error);
					return rc;
				}
			} else {
				/* This is always at least the head_cache_node -- assigned in
				* ibm_db.execute(), if params have been bound.
				*/
				curr = stmt_res->current_node;
				if ( curr != NULL ) {
					rc = _python_ibm_db_bind_data( stmt_res, curr, data);
					if ( rc == SQL_ERROR ) {
						sprintf(error, "Binding Error 2: %s", 
							IBM_DB_G(__python_stmt_err_msg));
						PyErr_SetString(PyExc_Exception, error);
						return rc;
					}
					stmt_res->current_node = curr->next;
				}
			}
			return rc;
		}
	}
	return rc;
}

/*
 * static PyObject *_python_ibm_db_execute_helper1(stmt_handle *stmt_res, PyObject *parameters_tuple)
 *
 */ 
static PyObject *_python_ibm_db_execute_helper1(stmt_handle *stmt_res, PyObject *parameters_tuple)
{
	int rc, numOpts, i, bind_params = 0;
	SQLSMALLINT num;
	SQLPOINTER valuePtr;
	PyObject *data;
	char error[DB2_MAX_ERR_MSG_LEN];
	/* This is used to loop over the param cache */
	param_node *prev_ptr, *curr_ptr;
	/* Free any cursors that might have been allocated in a previous call to 
	* SQLExecute 
	*/
	Py_BEGIN_ALLOW_THREADS;
	SQLFreeStmt((SQLHSTMT)stmt_res->hstmt, SQL_CLOSE);
	Py_END_ALLOW_THREADS;

	/* This ensures that each call to ibm_db.execute start from scratch */
	stmt_res->current_node = stmt_res->head_cache_list;
	
	Py_BEGIN_ALLOW_THREADS;
	rc = SQLNumParams((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT*)&num);
	Py_END_ALLOW_THREADS;
	
	if ( num != 0 ) {
		/* Parameter Handling */
		if ( !NIL_P(parameters_tuple) ) {
			/* Make sure ibm_db.bind_param has been called */
			/* If the param list is NULL -- ERROR */
			if ( stmt_res->head_cache_list == NULL ) {
				bind_params = 1;
			}

			if (!PyTuple_Check(parameters_tuple)) {
				PyErr_SetString(PyExc_Exception, "Param is not a tuple");
				return NULL;
			}

			numOpts = PyTuple_Size(parameters_tuple);
	
			if (numOpts > num) {
				/* More are passed in -- Warning - Use the max number present */
				sprintf(error, "%d params bound not matching %d required", 
						numOpts, num);
				PyErr_SetString(PyExc_Exception, error);
				numOpts = stmt_res->num_params;
			} else if (numOpts < num) {
				/* If there are less params passed in, than are present 
				* -- Error 
				*/
				sprintf(error, "%d params bound not matching %d required", 
						numOpts, num);
				PyErr_SetString(PyExc_Exception, error);
				return NULL;
			}

			for ( i = 0; i < numOpts; i++) {
				/* Bind values from the parameters_tuple to params */
				data = PyTuple_GetItem(parameters_tuple, i);

				/* The 0 denotes that you work only with the current node.
				* The 4th argument specifies whether the data passed in
				* has been described. So we need to call SQLDescribeParam
				* before binding depending on this.
				*/
				rc = _python_ibm_db_execute_helper2(stmt_res, data, 0, bind_params);
				if ( rc == SQL_ERROR) {
					sprintf(error, "Binding Error: %s", IBM_DB_G(__python_stmt_err_msg));
					PyErr_SetString(PyExc_Exception, error);
					return NULL;
				}
			}
		} else {
			/* No additional params passed in. Use values already bound. */
			if ( num > stmt_res->num_params ) {
				/* More parameters than we expected */
				sprintf(error, "%d params bound not matching %d required", 
						stmt_res->num_params, num);
				PyErr_SetString(PyExc_Exception, error);
			} else if ( num < stmt_res->num_params ) {
				/* Fewer parameters than we expected */
				sprintf(error, "%d params bound not matching %d required", 
						stmt_res->num_params, num);
				PyErr_SetString(PyExc_Exception, error);
				return NULL;
			}
			
			/* Param cache node list is empty -- No params bound */
			if ( stmt_res->head_cache_list == NULL ) {
				PyErr_SetString(PyExc_Exception, "Parameters not bound");
				return NULL;
			} else {
				/* The 1 denotes that you work with the whole list 
				 * And bind sequentially 				
				 */
				rc = _python_ibm_db_execute_helper2(stmt_res, NULL, 1, 0);
				if ( rc == SQL_ERROR ) {
					sprintf(error, "Binding Error 3: %s", IBM_DB_G(__python_stmt_err_msg));
					PyErr_SetString(PyExc_Exception, error);
					return NULL;
				}
			}
		}
	} else {
		/* No Parameters 
		 * We just execute the statement. No additional work needed. 
		 */
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLExecute((SQLHSTMT)stmt_res->hstmt);
		Py_END_ALLOW_THREADS;
		
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			sprintf(error, "Statement Execute Failed: %s", IBM_DB_G(__python_stmt_err_msg));
			PyErr_SetString(PyExc_Exception, error);
			return NULL;
		}
		Py_INCREF(Py_True);
		return Py_True;
	}
		
	/* Execute Stmt -- All parameters bound */
	Py_BEGIN_ALLOW_THREADS;
	rc = SQLExecute((SQLHSTMT)stmt_res->hstmt);
	Py_END_ALLOW_THREADS;
	
	if ( rc == SQL_ERROR ) {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
		sprintf(error, "Statement Execute Failed: %s", IBM_DB_G(__python_stmt_err_msg));
		PyErr_SetString(PyExc_Exception, error);
		return NULL;
	}
		
	if ( rc == SQL_NEED_DATA ) {
		rc = SQLParamData((SQLHSTMT)stmt_res->hstmt, (SQLPOINTER *)&valuePtr);
		while ( rc == SQL_NEED_DATA ) {
			/* passing data value for a parameter */
			if ( !NIL_P(((param_node*)valuePtr)->svalue)) {
				Py_BEGIN_ALLOW_THREADS;
				rc = SQLPutData((SQLHSTMT)stmt_res->hstmt, (SQLPOINTER)(((param_node*)valuePtr)->svalue), ((param_node*)valuePtr)->ivalue);
				Py_END_ALLOW_THREADS;
			} else {
				Py_BEGIN_ALLOW_THREADS;
				rc = SQLPutData((SQLHSTMT)stmt_res->hstmt, (SQLPOINTER)(((param_node*)valuePtr)->uvalue), ((param_node*)valuePtr)->ivalue);
				Py_END_ALLOW_THREADS;
			}
			
			if ( rc == SQL_ERROR ) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT,
						rc, 1, NULL, -1, 1);
				sprintf(error, "Sending data failed: %s", 
						IBM_DB_G(__python_stmt_err_msg));
				PyErr_SetString(PyExc_Exception, error);
				return NULL;
			}

			rc = SQLParamData((SQLHSTMT)stmt_res->hstmt, (SQLPOINTER *)&valuePtr);
		}

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			sprintf(error, "Sending data failed: %s", IBM_DB_G(__python_stmt_err_msg));
			PyErr_SetString(PyExc_Exception, error);
			return NULL;
		}
	}
		
	/* cleanup dynamic bindings if present */
	if ( bind_params == 1 ) {
		/* Free param cache list */
		curr_ptr = stmt_res->head_cache_list;
		prev_ptr = stmt_res->head_cache_list;
			
		while (curr_ptr != NULL) {
			curr_ptr = curr_ptr->next;
			
			/* Free Values */
			if ( prev_ptr->svalue) {
				PyMem_Del(prev_ptr->svalue);
			}
			PyMem_Del(prev_ptr);
			prev_ptr = curr_ptr;
       		}
		
		stmt_res->head_cache_list = NULL;
		stmt_res->num_params = 0;
	}
	
	if ( rc != SQL_ERROR ) {
		Py_INCREF(Py_True);
		return Py_True;
	}
	return NULL;
}

/*!# ibm_db.execute
 *
 * ===Description
 * Py_True/Py_False ibm_db.execute ( IBM_DBStatement stmt [, tuple parameters] )
 *
 * ibm_db.execute() executes an SQL statement that was prepared by
 * ibm_db.prepare().
 *
 * If the SQL statement returns a result set, for example, a SELECT statement
 * or a CALL to a stored procedure that returns one or more result sets, you
 * can retrieve a row as an tuple/dictionary from the stmt resource using
 * ibm_db.fetch_assoc(), ibm_db.fetch_both(), or ibm_db.fetch_tuple().
 * Alternatively, you can use ibm_db.fetch_row() to move the result set pointer
 * to the next row and fetch a column at a time from that row with
 * ibm_db.result().
 *
 * Refer to ibm_db.prepare() for a brief discussion of the advantages of using
 * ibm_db.prepare() and ibm_db.execute() rather than ibm_db.exec().
 *
 * ===Parameters
 * ====stmt
 *
 *		A prepared statement returned from ibm_db.prepare().
 *
 * ====parameters
 *
 *		An tuple of input parameters matching any parameter markers contained
 * in the prepared statement.
 *
 * ===Return Values
 *
 * Returns Py_True on success or Py_False on failure.
 */
static PyObject *ibm_db_execute(PyObject *self, PyObject *args)			
{
	PyObject *py_stmt_res = NULL;
	PyObject *parameters_tuple = NULL;
	stmt_handle *stmt_res;
	if (!PyArg_ParseTuple(args, "O|O", &py_stmt_res, &parameters_tuple))
		return NULL;

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}
		return _python_ibm_db_execute_helper1(stmt_res, parameters_tuple);
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
		return NULL;
	}
	
}


/*!# ibm_db.conn_errormsg
 *
 * ===Description
 * string ibm_db.conn_errormsg ( [resource connection] )
 *
 * ibm_db.conn_errormsg() returns an error message and SQLCODE value
 * representing the reason the last database connection attempt failed.
 * As ibm_db.connect() returns FALSE in the event of a failed connection
 * attempt, do not pass any parameters to ibm_db.conn_errormsg() to retrieve
 * the associated error message and SQLCODE value.
 *
 * If, however, the connection was successful but becomes invalid over time,
 * you can pass the connection parameter to retrieve the associated error
 * message and SQLCODE value for a specific connection.
 * ===Parameters
 *
 * ====connection
 *		A connection resource associated with a connection that initially
 * succeeded, but which over time became invalid.
 *
 * ===Return Values
 *
 * Returns a string containing the error message and SQLCODE value resulting
 * from a failed connection attempt. If there is no error associated with the
 * last connection attempt, ibm_db.conn_errormsg() returns an empty string.
 */
static PyObject *ibm_db_conn_errormsg(PyObject *self, PyObject *args)
{
	conn_handle *conn_res = NULL;
	PyObject *py_conn_res = NULL;
	PyObject *retVal = NULL;
	char* return_str = NULL;	/* This variable is used by 
					* _python_ibm_db_check_sql_errors to return err 
					* strings 
					*/

	if (!PyArg_ParseTuple(args, "|O", &py_conn_res))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
		}

		return_str = ALLOC_N(char, DB2_MAX_ERR_MSG_LEN);

		memset(return_str, 0, DB2_MAX_ERR_MSG_LEN);

		_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, -1, 0, 
										  return_str, DB2_ERRMSG, 
										  conn_res->errormsg_recno_tracker);
		if(conn_res->errormsg_recno_tracker - conn_res->error_recno_tracker >= 1)
			 conn_res->error_recno_tracker = conn_res->errormsg_recno_tracker;
		conn_res->errormsg_recno_tracker++;

		retVal =  StringOBJ_FromASCII(return_str);
		if(return_str != NULL) {
			PyMem_Del(return_str);
			return_str = NULL;
		}
		return retVal;
	} else {
		return StringOBJ_FromASCII(IBM_DB_G(__python_conn_err_msg));
	}
}

/*!# ibm_db.stmt_errormsg
 *
 * ===Description
 * string ibm_db.stmt_errormsg ( [resource stmt] )
 *
 * Returns a string containing the last SQL statement error message.
 *
 * If you do not pass a statement resource as an argument to
 * ibm_db.stmt_errormsg(), the driver returns the error message associated with
 * the last attempt to return a statement resource, for example, from
 * ibm_db.prepare() or ibm_db.exec().
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid statement resource.
 *
 * ===Return Values
 *
 * Returns a string containing the error message and SQLCODE value for the last
 * error that occurred issuing an SQL statement.
 */
static PyObject *ibm_db_stmt_errormsg(PyObject *self, PyObject *args)
{
	stmt_handle *stmt_res = NULL;
	PyObject *py_stmt_res = NULL;
	PyObject *retVal = NULL;
	char* return_str = NULL;	/* This variable is used by 
					* _python_ibm_db_check_sql_errors to return err 
					* strings 
					*/

	if (!PyArg_ParseTuple(args, "|O", &py_stmt_res))
		return NULL;

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}
		return_str = ALLOC_N(char, DB2_MAX_ERR_MSG_LEN);

		memset(return_str, 0, DB2_MAX_ERR_MSG_LEN);

		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, -1, 0, 
										return_str, DB2_ERRMSG, 
										stmt_res->errormsg_recno_tracker);
		if(stmt_res->errormsg_recno_tracker - stmt_res->error_recno_tracker >= 1)
			stmt_res->error_recno_tracker = stmt_res->errormsg_recno_tracker;
		stmt_res->errormsg_recno_tracker++;

		retVal = StringOBJ_FromASCII(return_str);
		if(return_str != NULL) {
			PyMem_Del(return_str);
			return_str = NULL;
		}
		return retVal;
	} else {
		return StringOBJ_FromASCII(IBM_DB_G(__python_stmt_err_msg));
	}
}

/*!# ibm_db.conn_error
 * ===Description
 * string ibm_db.conn_error ( [resource connection] )
 *
 * ibm_db.conn_error() returns an SQLSTATE value representing the reason the
 * last attempt to connect to a database failed. As ibm_db.connect() returns
 * FALSE in the event of a failed connection attempt, you do not pass any
 * parameters to ibm_db.conn_error() to retrieve the SQLSTATE value.
 *
 * If, however, the connection was successful but becomes invalid over time, you
 * can pass the connection parameter to retrieve the SQLSTATE value for a
 * specific connection.
 *
 * To learn what the SQLSTATE value means, you can issue the following command
 * at a DB2 Command Line Processor prompt: db2 '? sqlstate-value'. You can also
 * call ibm_db.conn_errormsg() to retrieve an explicit error message and the
 * associated SQLCODE value.
 *
 * ===Parameters
 *
 * ====connection
 *		A connection resource associated with a connection that initially
 * succeeded, but which over time became invalid.
 *
 * ===Return Values
 *
 * Returns the SQLSTATE value resulting from a failed connection attempt.
 * Returns an empty string if there is no error associated with the last
 * connection attempt.
 */
static PyObject *ibm_db_conn_error(PyObject *self, PyObject *args)			
{
	conn_handle *conn_res = NULL;
	PyObject *py_conn_res = NULL;
	PyObject *retVal = NULL;
	char *return_str = NULL; /* This variable is used by 
							 * _python_ibm_db_check_sql_errors to return err 
							 * strings */

	if (!PyArg_ParseTuple(args, "|O", &py_conn_res))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
		return_str = ALLOC_N(char, SQL_SQLSTATE_SIZE + 1);

		memset(return_str, 0, SQL_SQLSTATE_SIZE + 1);

		_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, -1, 0, 
										return_str, DB2_ERR, 
										conn_res->error_recno_tracker);
		if (conn_res->error_recno_tracker-conn_res->errormsg_recno_tracker >= 1) {
			conn_res->errormsg_recno_tracker = conn_res->error_recno_tracker;
		}
		conn_res->error_recno_tracker++;

		retVal = StringOBJ_FromASCII(return_str);
		if(return_str != NULL) {
			PyMem_Del(return_str);
			return_str = NULL;
		}
		return retVal;
	} else {
		return StringOBJ_FromASCII(IBM_DB_G(__python_conn_err_state));
	}
}

/*!# ibm_db.stmt_error
 *
 * ===Description
 * string ibm_db.stmt_error ( [resource stmt] )
 *
 * Returns a string containing the SQLSTATE value returned by an SQL statement.
 *
 * If you do not pass a statement resource as an argument to
 * ibm_db.stmt_error(), the driver returns the SQLSTATE value associated with
 * the last attempt to return a statement resource, for example, from
 * ibm_db.prepare() or ibm_db.exec().
 *
 * To learn what the SQLSTATE value means, you can issue the following command
 * at a DB2 Command Line Processor prompt: db2 '? sqlstate-value'. You can also
 * call ibm_db.stmt_errormsg() to retrieve an explicit error message and the
 * associated SQLCODE value.
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid statement resource.
 *
 * ===Return Values
 *
 * Returns a string containing an SQLSTATE value.
 */
static PyObject *ibm_db_stmt_error(PyObject *self, PyObject *args)
{
	stmt_handle *stmt_res = NULL;
	PyObject *py_stmt_res = NULL;
	PyObject *retVal = NULL;
	char* return_str = NULL; /* This variable is used by 
							 * _python_ibm_db_check_sql_errors to return err 
							 * strings 
							 */

	if (!PyArg_ParseTuple(args, "|O", &py_stmt_res))
		return NULL;

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}
		return_str = ALLOC_N(char, DB2_MAX_ERR_MSG_LEN);

		memset(return_str, 0, DB2_MAX_ERR_MSG_LEN);

		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, -1, 0, 
										return_str, DB2_ERR, 
										stmt_res->error_recno_tracker);

		if (stmt_res->error_recno_tracker-stmt_res->errormsg_recno_tracker >= 1) {
			stmt_res->errormsg_recno_tracker = stmt_res->error_recno_tracker;
		}
		stmt_res->error_recno_tracker++;

		retVal = StringOBJ_FromASCII(return_str);
		if(return_str != NULL) {
			PyMem_Del(return_str);
			return_str = NULL;
		}
		return retVal;
	} else {
		return StringOBJ_FromASCII(IBM_DB_G(__python_stmt_err_state));
	}
}

/*!# ibm_db.next_result
 *
 * ===Description
 * resource ibm_db.next_result ( resource stmt )
 *
 * Requests the next result set from a stored procedure.
 *
 * A stored procedure can return zero or more result sets. While you handle the
 * first result set in exactly the same way you would handle the results
 * returned by a simple SELECT statement, to fetch the second and subsequent
 * result sets from a stored procedure you must call the ibm_db.next_result()
 * function and return the result to a uniquely named Python variable.
 *
 * ===Parameters
 * ====stmt
 *		A prepared statement returned from ibm_db.exec() or ibm_db.execute().
 *
 * ===Return Values
 *
 * Returns a new statement resource containing the next result set if the stored
 * procedure returned another result set. Returns FALSE if the stored procedure
 * did not return another result set.
 */
static PyObject *ibm_db_next_result(PyObject *self, PyObject *args)			
{
	PyObject *py_stmt_res = NULL;
	stmt_handle *stmt_res, *new_stmt_res = NULL;
	int rc = 0;
	SQLHANDLE new_hstmt;

	if (!PyArg_ParseTuple(args, "O", &py_stmt_res))
		return NULL;

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}
		_python_ibm_db_clear_stmt_err_cache();

		/* alloc handle and return only if it errors */
		rc = SQLAllocHandle(SQL_HANDLE_STMT, stmt_res->hdbc, &new_hstmt);
		if ( rc < SQL_SUCCESS ) {
			_python_ibm_db_check_sql_errors(stmt_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			Py_INCREF(Py_False);
			return Py_False;
		}

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLNextResult((SQLHSTMT)stmt_res->hstmt, (SQLHSTMT)new_hstmt);
		Py_END_ALLOW_THREADS;
		
		if( rc != SQL_SUCCESS ) {
			if(rc < SQL_SUCCESS) {
				_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, 
												rc, 1, NULL, -1, 1);
			}
			SQLFreeHandle(SQL_HANDLE_STMT, new_hstmt);
			Py_INCREF(Py_False);
			return Py_False;
		}

		/* Initialize stmt resource members with default values. */
		/* Parsing will update options if needed */
		new_stmt_res = PyObject_NEW(stmt_handle, &stmt_handleType);
		new_stmt_res->s_bin_mode = stmt_res->s_bin_mode;
		new_stmt_res->cursor_type = stmt_res->cursor_type;
		new_stmt_res->s_case_mode = stmt_res->s_case_mode;
		new_stmt_res->head_cache_list = NULL;
		new_stmt_res->current_node = NULL;
		new_stmt_res->num_params = 0;
		new_stmt_res->file_param = 0;
		new_stmt_res->column_info = NULL;
		new_stmt_res->num_columns = 0;
		new_stmt_res->row_data = NULL;
		new_stmt_res->hstmt = new_hstmt;
		new_stmt_res->hdbc = stmt_res->hdbc;

		return (PyObject *)new_stmt_res;		
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
		return NULL;
	}
}

/*!# ibm_db.num_fields
 *
 * ===Description
 * int ibm_db.num_fields ( resource stmt )
 *
 * Returns the number of fields contained in a result set. This is most useful
 * for handling the result sets returned by dynamically generated queries, or
 * for result sets returned by stored procedures, where your application cannot
 * otherwise know how to retrieve and use the results.
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid statement resource containing a result set.
 *
 * ===Return Values
 *
 * Returns an integer value representing the number of fields in the result set
 * associated with the specified statement resource. Returns FALSE if the
 * statement resource is not a valid input value.
 */
static PyObject *ibm_db_num_fields(PyObject *self, PyObject *args)			
{
	PyObject *py_stmt_res = NULL;
	stmt_handle *stmt_res;
	int rc = 0;
	SQLSMALLINT indx = 0;
	char error[DB2_MAX_ERR_MSG_LEN];

	if (!PyArg_ParseTuple(args, "O", &py_stmt_res))
		return NULL;

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLNumResultCols((SQLHSTMT)stmt_res->hstmt, &indx);
		Py_END_ALLOW_THREADS;
		
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
											1, NULL, -1, 1);
			sprintf(error, "SQLNumResultCols failed: %s", 
					IBM_DB_G(__python_stmt_err_msg));
			PyErr_SetString(PyExc_Exception, error);	
			return NULL;
		}
		return PyInt_FromLong(indx);
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
		return NULL;
	}
	Py_INCREF(Py_False);
	return Py_False;
}

/*!# ibm_db.num_rows
 *
 * ===Description
 * int ibm_db.num_rows ( resource stmt )
 *
 * Returns the number of rows deleted, inserted, or updated by an SQL statement.
 *
 * To determine the number of rows that will be returned by a SELECT statement,
 * issue SELECT COUNT(*) with the same predicates as your intended SELECT
 * statement and retrieve the value. If your application logic checks the number
 * of rows returned by a SELECT statement and branches if the number of rows is
 * 0, consider modifying your application to attempt to return the first row
 * with one of ibm_db.fetch_assoc(), ibm_db.fetch_both(), ibm_db.fetch_array(),
 * or ibm_db.fetch_row(), and branch if the fetch function returns FALSE.
 *
 * Note: If you issue a SELECT statement using a scrollable cursor,
 * ibm_db.num_rows() returns the number of rows returned by the SELECT
 * statement. However, the overhead associated with scrollable cursors
 * significantly degrades the performance of your application, so if this is the
 * only reason you are considering using scrollable cursors, you should use a
 * forward-only cursor and either call SELECT COUNT(*) or rely on the boolean
 * return value of the fetch functions to achieve the equivalent functionality
 * with much better performance.
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid stmt resource containing a result set.
 *
 * ===Return Values
 *
 * Returns the number of rows affected by the last SQL statement issued by the
 * specified statement handle.
 */
static PyObject *ibm_db_num_rows(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	stmt_handle *stmt_res;
	int rc = 0;
	SQLINTEGER count = 0;
	char error[DB2_MAX_ERR_MSG_LEN];

	if (!PyArg_ParseTuple(args, "O", &py_stmt_res))
		return NULL;

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLRowCount((SQLHSTMT)stmt_res->hstmt, &count);
		Py_END_ALLOW_THREADS;
		
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 
											1, NULL, -1, 1);
			sprintf(error, "SQLRowCount failed: %s", 
					IBM_DB_G(__python_stmt_err_msg));
			PyErr_SetString(PyExc_Exception, error);
			return NULL;
		}
		return PyInt_FromLong(count);
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
		return NULL;
	}
	Py_INCREF(Py_False);
	return Py_False;
}

/*!# ibm_db.get_num_result 
 *
 * ===Description
 * int ibm_db.num_rows ( resource stmt )
 *
 * Returns the number of rows in a current open non-dynamic scrollable cursor.
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid stmt resource containing a result set.
 *
 * ===Return Values
 *
 * True on success or False on failure.
 */
static PyObject *ibm_db_get_num_result(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	stmt_handle *stmt_res;
	int rc = 0;
	SQLINTEGER count = 0;
	char error[DB2_MAX_ERR_MSG_LEN];
	SQLSMALLINT strLenPtr;

	if (!PyArg_ParseTuple(args, "O", &py_stmt_res))
		return NULL;

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetDiagField(SQL_HANDLE_STMT, stmt_res->hstmt, 0,
								SQL_DIAG_CURSOR_ROW_COUNT, &count, SQL_IS_INTEGER,
								&strLenPtr);
		Py_END_ALLOW_THREADS;
		
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc,
											1, NULL, -1, 1);
			sprintf(error, "SQLGetDiagField failed: %s",
					IBM_DB_G(__python_stmt_err_msg));
			PyErr_SetString(PyExc_Exception, error);
			return NULL;
		}
		return PyInt_FromLong(count);
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
		return NULL;
	}
	Py_INCREF(Py_False);
	return Py_False;
}

/* static int _python_ibm_db_get_column_by_name(stmt_handle *stmt_res, char *col_name, int col)
 */
static int _python_ibm_db_get_column_by_name(stmt_handle *stmt_res, char *col_name, int col)
{
	int i;
	/* get column header info */
	if ( stmt_res->column_info == NULL ) {
		if (_python_ibm_db_get_result_set_info(stmt_res)<0) {
			return -1;
		}
	}
	if ( col_name == NULL ) {
		if ( col >= 0 && col < stmt_res->num_columns) {
			return col;
		} else {
			return -1;
		}
	}
	/* should start from 0 */
	i = 0;
	while (i < stmt_res->num_columns) {
		if (strcmp((char*)stmt_res->column_info[i].name, col_name) == 0) {
			return i;
		}
		i++;
	}
	return -1;
}

/*!# ibm_db.field_name
 *
 * ===Description
 * string ibm_db.field_name ( resource stmt, mixed column )
 *
 * Returns the name of the specified column in the result set.
 *
 * ===Parameters
 *
 * ====stmt
 *		Specifies a statement resource containing a result set.
 *
 * ====column
 *		Specifies the column in the result set. This can either be an integer
 * representing the 0-indexed position of the column, or a string containing the
 * name of the column.
 *
 * ===Return Values
 *
 * Returns a string containing the name of the specified column. If the
 * specified column does not exist in the result set, ibm_db.field_name()
 * returns FALSE.
 */
static PyObject *ibm_db_field_name(PyObject *self, PyObject *args)			
{
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	PyObject *py_stmt_res = NULL;
	stmt_handle* stmt_res = NULL;
	char *col_name = NULL;
	int col = -1;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}

	if ( TYPE(column) == PYTHON_FIXNUM ) {
		col = PyInt_AsLong(column);
	} else if (PyString_Check(column)) {
#if  PY_MAJOR_VERSION >= 3
		col_name_py3_tmp = PyUnicode_AsASCIIString(column);
		if (col_name_py3_tmp == NULL) {
			return NULL;
		}
		column = col_name_py3_tmp;
#endif
		col_name = PyBytes_AsString(column);
	} else {
		/* Column argument has to be either an integer or string */
		Py_RETURN_FALSE;
	} 
	col = _python_ibm_db_get_column_by_name(stmt_res, col_name, col);
#if  PY_MAJOR_VERSION >= 3
	if (col_name_py3_tmp != NULL) {
		Py_XDECREF(col_name_py3_tmp);
	}
#endif
	if ( col < 0 ) {
		Py_INCREF(Py_False);
		return Py_False;
	}
	return StringOBJ_FromASCII((char*)stmt_res->column_info[col].name);
}

/*!# ibm_db.field_display_size
 *
 * ===Description
 * int ibm_db.field_display_size ( resource stmt, mixed column )
 *
 * Returns the maximum number of bytes required to display a column in a result
 * set.
 *
 * ===Parameters
 * ====stmt
 *		Specifies a statement resource containing a result set.
 *
 * ====column
 *		Specifies the column in the result set. This can either be an integer
 * representing the 0-indexed position of the column, or a string containing the
 * name of the column.
 *
 * ===Return Values
 *
 * Returns an integer value with the maximum number of bytes required to display
 * the specified column.
 * If the column does not exist in the result set, ibm_db.field_display_size()
 * returns FALSE.
 */
static PyObject *ibm_db_field_display_size(PyObject *self, PyObject *args) 
{
	PyObject *py_stmt_res = NULL;
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	int col = -1;
	char *col_name = NULL;
	stmt_handle *stmt_res = NULL;
	int rc;
	SQLINTEGER colDataDisplaySize;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}

	if ( TYPE(column) == PYTHON_FIXNUM ) {
		col = PyInt_AsLong(column);
	} else if (PyString_Check(column)) {
#if  PY_MAJOR_VERSION >= 3
		col_name_py3_tmp = PyUnicode_AsASCIIString(column);
		if (col_name_py3_tmp == NULL) {
			return NULL;
		}
		column = col_name_py3_tmp;
#endif
		col_name = PyBytes_AsString(column);
	} else {
		/* Column argument has to be either an integer or string */
		Py_RETURN_FALSE;
	}	
	col = _python_ibm_db_get_column_by_name(stmt_res, col_name, col);
#if  PY_MAJOR_VERSION >= 3
	if ( col_name_py3_tmp != NULL ) {
		Py_XDECREF(col_name_py3_tmp);
	}
#endif
	if ( col < 0 ) {
		Py_RETURN_FALSE;
	}

	Py_BEGIN_ALLOW_THREADS;
	rc = SQLColAttributes((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT)col+1,
		 SQL_DESC_DISPLAY_SIZE, NULL, 0, NULL, &colDataDisplaySize);
	Py_END_ALLOW_THREADS;
	
	if ( rc < SQL_SUCCESS ) {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, 
									  NULL, -1, 1);
		Py_INCREF(Py_False);
		return Py_False;
	}
	return PyInt_FromLong(colDataDisplaySize);
}
/*!# ibm_db.field_nullable
 *
 * ===Description
 * bool ibm_db.field_nullable ( resource stmt, mixed column )
 *
 * Returns True/False based on indicated column in result set is nullable or not.
 *
 * ===Parameters
 *
 * ====stmt
 *              Specifies a statement resource containing a result set. 
 *
 * ====column
 *              Specifies the column in the result set. This can either be an integer
 * representing the 0-indexed position of the column, or a string containing the
 * name of the column.
 *
 * ===Return Values
 *
 * Returns TRUE if indicated column is nullable else returns FALSE.
 * If the specified column does not exist in the result set, ibm_db.field_nullable() returns FALSE
 */
static PyObject *ibm_db_field_nullable(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	stmt_handle* stmt_res = NULL;
	char *col_name = NULL;
	int col = -1;
	int rc;
	SQLINTEGER nullableCol;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}

	if ( TYPE(column) == PYTHON_FIXNUM ) {
		col = PyInt_AsLong(column);
	} else if (PyString_Check(column)) {
#if  PY_MAJOR_VERSION >= 3
		col_name_py3_tmp = PyUnicode_AsASCIIString(column);
		if (col_name_py3_tmp == NULL) {
			return NULL;
		}
		column = col_name_py3_tmp;
#endif
		col_name = PyBytes_AsString(column);
	} else {
		/* Column argument has to be either an integer or string */
		Py_RETURN_FALSE;
	}
	col = _python_ibm_db_get_column_by_name(stmt_res, col_name, col);
#if  PY_MAJOR_VERSION >= 3
	if ( col_name_py3_tmp != NULL ) {
		Py_XDECREF(col_name_py3_tmp);
	}
#endif
	if ( col < 0 ) {
		 Py_RETURN_FALSE;
	}

	Py_BEGIN_ALLOW_THREADS;
	rc = SQLColAttributes((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT)col+1,
		SQL_DESC_NULLABLE, NULL, 0, NULL, &nullableCol);
	Py_END_ALLOW_THREADS;

	if ( rc < SQL_SUCCESS ) {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1,
					NULL, -1, 1);
		Py_RETURN_FALSE;
	} else if ( nullableCol == SQL_NULLABLE ) {
		Py_RETURN_TRUE;
	} else {
		Py_RETURN_FALSE;
	}
}
/*!# ibm_db.field_num
 *
 * ===Description
 * int ibm_db.field_num ( resource stmt, mixed column )
 *
 * Returns the position of the named column in a result set.
 *
 * ===Parameters
 *
 * ====stmt
 *		Specifies a statement resource containing a result set.
 *
 * ====column
 *		Specifies the column in the result set. This can either be an integer
 * representing the 0-indexed position of the column, or a string containing the
 * name of the column.
 *
 * ===Return Values
 *
 * Returns an integer containing the 0-indexed position of the named column in
 * the result set. If the specified column does not exist in the result set,
 * ibm_db.field_num() returns FALSE.
 */
static PyObject *ibm_db_field_num(PyObject *self, PyObject *args)			
{
	PyObject *py_stmt_res = NULL;
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	stmt_handle* stmt_res = NULL;
	char *col_name = NULL;
	int col = -1;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}

	if ( TYPE(column) == PYTHON_FIXNUM ) {
		col = PyInt_AsLong(column);
	} else if (PyString_Check(column)) {
#if  PY_MAJOR_VERSION >= 3
		col_name_py3_tmp = PyUnicode_AsASCIIString(column);
		if (col_name_py3_tmp == NULL) {
			return NULL;
		}
		column = col_name_py3_tmp;
#endif
		col_name = PyBytes_AsString(column);
	} else {
		/* Column argument has to be either an integer or string */
		Py_RETURN_FALSE;
	}
	col = _python_ibm_db_get_column_by_name(stmt_res, col_name, col);
#if  PY_MAJOR_VERSION >= 3
	if ( col_name_py3_tmp != NULL ) {
		Py_XDECREF(col_name_py3_tmp);
	}
#endif
	if ( col < 0 ) {
		Py_INCREF(Py_False);
		return Py_False;
	}
	return PyInt_FromLong(col);
}

/*!# ibm_db.field_precision
 *
 * ===Description
 * int ibm_db.field_precision ( resource stmt, mixed column )
 *
 * Returns the precision of the indicated column in a result set.
 *
 * ===Parameters
 *
 * ====stmt
 *		Specifies a statement resource containing a result set.
 *
 * ====column
 *		Specifies the column in the result set. This can either be an integer
 * representing the 0-indexed position of the column, or a string containing the
 * name of the column.
 *
 * ===Return Values
 *
 * Returns an integer containing the precision of the specified column. If the
 * specified column does not exist in the result set, ibm_db.field_precision()
 * returns FALSE.
 */
static PyObject *ibm_db_field_precision(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	stmt_handle* stmt_res = NULL;
	char *col_name = NULL;
	int col = -1;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}

	if ( TYPE(column) == PYTHON_FIXNUM ) {
		col = PyInt_AsLong(column);
	} else if (PyString_Check(column)) {
#if  PY_MAJOR_VERSION >= 3
		col_name_py3_tmp = PyUnicode_AsASCIIString(column);
		if (col_name_py3_tmp == NULL) {
			return NULL;
		}
		column = col_name_py3_tmp;
#endif
		col_name = PyBytes_AsString(column);
	} else {
		/* Column argument has to be either an integer or string */
		Py_RETURN_FALSE;
	} 
	col = _python_ibm_db_get_column_by_name(stmt_res, col_name, col);
#if  PY_MAJOR_VERSION >= 3
	if ( col_name_py3_tmp != NULL ) {
		Py_XDECREF(col_name_py3_tmp);
	}
#endif
	if ( col < 0 ) {
		Py_RETURN_FALSE;
	}
	return PyInt_FromLong(stmt_res->column_info[col].size);

}

/*!# ibm_db.field_scale
 *
 * ===Description
 * int ibm_db.field_scale ( resource stmt, mixed column )
 *
 * Returns the scale of the indicated column in a result set.
 *
 * ===Parameters
 * ====stmt
 *		Specifies a statement resource containing a result set.
 *
 * ====column
 *		Specifies the column in the result set. This can either be an integer
 * representing the 0-indexed position of the column, or a string containing the
 * name of the column.
 *
 * ===Return Values
 *
 * Returns an integer containing the scale of the specified column. If the
 * specified column does not exist in the result set, ibm_db.field_scale()
 * returns FALSE.
 */
static PyObject *ibm_db_field_scale(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	stmt_handle* stmt_res = NULL;
	char *col_name = NULL;
	int col = -1;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}
	if ( TYPE(column) == PYTHON_FIXNUM ) {
		col = PyInt_AsLong(column);
	} else if (PyString_Check(column)) {
#if  PY_MAJOR_VERSION >= 3
		col_name_py3_tmp = PyUnicode_AsASCIIString(column);
		if (col_name_py3_tmp == NULL) {
			return NULL;
		}
		column = col_name_py3_tmp;
#endif
		col_name = PyBytes_AsString(column);
	} else {
		/* Column argument has to be either an integer or string */
		Py_RETURN_FALSE;
	}
	col = _python_ibm_db_get_column_by_name(stmt_res, col_name, col);
#if  PY_MAJOR_VERSION >= 3
	if ( col_name_py3_tmp != NULL ) {
		Py_XDECREF(col_name_py3_tmp);
	}
#endif
	if ( col < 0 ) {
		Py_RETURN_FALSE;
	}
	return PyInt_FromLong(stmt_res->column_info[col].scale);
}

/*!# ibm_db.field_type
 *
 * ===Description
 * string ibm_db.field_type ( resource stmt, mixed column )
 *
 * Returns the data type of the indicated column in a result set.
 *
 * ===Parameters
 * ====stmt
 *		Specifies a statement resource containing a result set.
 *
 * ====column
 *		Specifies the column in the result set. This can either be an integer
 * representing the 0-indexed position of the column, or a string containing the
 * name of the column.
 *
 * ====Return Values
 *
 * Returns a string containing the defined data type of the specified column.
 * If the specified column does not exist in the result set, ibm_db.field_type()
 * returns FALSE.
 */
static PyObject *ibm_db_field_type(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	stmt_handle* stmt_res = NULL;
	char *col_name = NULL;
	char *str_val = NULL;
	int col = -1;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}
	if ( TYPE(column) == PYTHON_FIXNUM ) {
		col = PyInt_AsLong(column);
	} else if (PyString_Check(column)) {
#if  PY_MAJOR_VERSION >= 3
		col_name_py3_tmp = PyUnicode_AsASCIIString(column);
		if (col_name_py3_tmp == NULL) {
			return NULL;
		}
		column = col_name_py3_tmp;
#endif
		col_name = PyBytes_AsString(column);
	} else {
		/* Column argument has to be either an integer or string */
		Py_RETURN_FALSE;
	}
	col = _python_ibm_db_get_column_by_name(stmt_res, col_name, col);
#if  PY_MAJOR_VERSION >= 3
	if ( col_name_py3_tmp != NULL ) {
		Py_XDECREF(col_name_py3_tmp);
	}
#endif
	if ( col < 0 ) {
		Py_RETURN_FALSE;
	}
	switch (stmt_res->column_info[col].type) {
		case SQL_SMALLINT:
		case SQL_INTEGER:
			str_val = "int";
			break;
		case SQL_BIGINT:
			str_val = "bigint";
			break;
		case SQL_REAL:
		case SQL_FLOAT:
		case SQL_DOUBLE:
		case SQL_DECFLOAT:
			str_val = "real";
			break;
		case SQL_DECIMAL:
		case SQL_NUMERIC:
			str_val = "decimal";
			break;
		case SQL_CLOB:
			str_val = "clob";
			break;
		case SQL_DBCLOB:
			str_val = "dbclob";
			break;	
		case SQL_BLOB:
			str_val = "blob";
			break;
		case SQL_XML:
			str_val = "xml";
			break;
		case SQL_TYPE_DATE:
			str_val = "date";
			break;
		case SQL_TYPE_TIME:
			str_val = "time";
			break;
		case SQL_TYPE_TIMESTAMP:
			str_val = "timestamp";
			break;
		default:
			str_val = "string";
			break;
	}
	return StringOBJ_FromASCII(str_val);
}

/*!# ibm_db.field_width
 *
 * ===Description
 * int ibm_db.field_width ( resource stmt, mixed column )
 *
 * Returns the width of the current value of the indicated column in a result
 * set. This is the maximum width of the column for a fixed-length data type, or
 * the actual width of the column for a variable-length data type.
 *
 * ===Parameters
 *
 * ====stmt
 *		Specifies a statement resource containing a result set.
 *
 * ====column
 *		Specifies the column in the result set. This can either be an integer
 * representing the 0-indexed position of the column, or a string containing the
 * name of the column.
 *
 * ===Return Values
 *
 * Returns an integer containing the width of the specified character or binary
 * data type column in a result set. If the specified column does not exist in
 * the result set, ibm_db.field_width() returns FALSE.
 */
static PyObject *ibm_db_field_width(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	int col = -1;
	char *col_name = NULL;
	stmt_handle *stmt_res = NULL;
	int rc;
	SQLINTEGER colDataSize;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}
	if ( TYPE(column) == PYTHON_FIXNUM ) {
		col = PyInt_AsLong(column);
	} else if (PyString_Check(column)) {
#if  PY_MAJOR_VERSION >= 3
		col_name_py3_tmp = PyUnicode_AsASCIIString(column);
		if (col_name_py3_tmp == NULL) {
			return NULL;
		}
		column = col_name_py3_tmp;
#endif
		col_name = PyBytes_AsString(column);
	} else {
		/* Column argument has to be either an integer or string */
		Py_RETURN_FALSE;
	}
	col = _python_ibm_db_get_column_by_name(stmt_res, col_name, col);
#if  PY_MAJOR_VERSION >= 3
	if ( col_name_py3_tmp != NULL ) {
		Py_XDECREF(col_name_py3_tmp);
	}
#endif
	if ( col < 0 ) {
		Py_RETURN_FALSE;
	}
	
	Py_BEGIN_ALLOW_THREADS;
	rc = SQLColAttributes((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT)col + 1,
		SQL_DESC_LENGTH, NULL, 0, NULL, &colDataSize);
	Py_END_ALLOW_THREADS;
	
	if ( rc != SQL_SUCCESS ) {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, 
			NULL, -1, 1);
		PyErr_Clear();
		Py_RETURN_FALSE;
	}
	return PyInt_FromLong(colDataSize);
}

/*!# ibm_db.cursor_type
 *
 * ===Description
 * int ibm_db.cursor_type ( resource stmt )
 *
 * Returns the cursor type used by a statement resource. Use this to determine
 * if you are working with a forward-only cursor or scrollable cursor.
 *
 * ===Parameters
 * ====stmt
 *		A valid statement resource.
 *
 * ===Return Values
 *
 * Returns either SQL_SCROLL_FORWARD_ONLY if the statement resource uses a
 * forward-only cursor or SQL_CURSOR_KEYSET_DRIVEN if the statement resource
 * uses a scrollable cursor.
 */
static PyObject *ibm_db_cursor_type(PyObject *self, PyObject *args)			
{
	PyObject *py_stmt_res = NULL;
	stmt_handle *stmt_res = NULL;

	if (!PyArg_ParseTuple(args, "O", &py_stmt_res))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}

	return PyInt_FromLong(stmt_res->cursor_type != SQL_SCROLL_FORWARD_ONLY);
}

/*!# ibm_db.rollback
 *
 * ===Description
 * bool ibm_db.rollback ( resource connection )
 *
 * Rolls back an in-progress transaction on the specified connection resource
 * and begins a new transaction. Python applications normally default to
 * AUTOCOMMIT mode, so ibm_db.rollback() normally has no effect unless
 * AUTOCOMMIT has been turned off for the connection resource.
 *
 * Note: If the specified connection resource is a persistent connection, all
 * transactions in progress for all applications using that persistent
 * connection will be rolled back. For this reason, persistent connections are
 * not recommended for use in applications that require transactions.
 *
 * ===Parameters
 *
 * ====connection
 *		A valid database connection resource variable as returned from
 * ibm_db.connect() or ibm_db.pconnect().
 *
 * ===Return Values
 *
 * Returns TRUE on success or FALSE on failure.
 */
static PyObject *ibm_db_rollback(PyObject *self, PyObject *args)
{
	PyObject *py_conn_res = NULL;
	conn_handle *conn_res;
	int rc;

	if (!PyArg_ParseTuple(args, "O", &py_conn_res))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			return NULL;
		}

		rc = SQLEndTran(SQL_HANDLE_DBC, conn_res->hdbc, SQL_ROLLBACK);

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
				NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			Py_RETURN_TRUE;
		}
	}
	Py_RETURN_FALSE;
}

/*!# ibm_db.free_stmt
 *
 * ===Description
 * bool ibm_db.free_stmt ( resource stmt )
 *
 * Frees the system and database resources that are associated with a statement
 * resource. These resources are freed implicitly when a script finishes, but
 * you can call ibm_db.free_stmt() to explicitly free the statement resources
 * before the end of the script.
 *
 * ===Parameters
 * ====stmt
 *		A valid statement resource.
 *
 * ===Return Values
 *
 * Returns TRUE on success or FALSE on failure.
 *
 * DEPRECATED
 */
static PyObject *ibm_db_free_stmt(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	stmt_handle *handle;
	SQLRETURN rc;
	if (!PyArg_ParseTuple(args, "O", &py_stmt_res))
		return NULL;
	if (!NIL_P(py_stmt_res)) {
		if (PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			handle = (stmt_handle *)py_stmt_res;
			if (handle->hstmt != -1) {
				rc = SQLFreeHandle( SQL_HANDLE_STMT, handle->hstmt);
				if ( rc == SQL_ERROR ){ 
					_python_ibm_db_check_sql_errors(handle->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
					Py_RETURN_FALSE;
				}
				 _python_ibm_db_free_result_struct(handle);
				handle->hstmt = -1;
				Py_RETURN_TRUE;
			}
		}
	}
	Py_RETURN_NONE;
}

/*	static RETCODE _python_ibm_db_get_data(stmt_handle *stmt_res, int col_num, short ctype, void *buff, int in_length, SQLINTEGER *out_length) */
static RETCODE _python_ibm_db_get_data(stmt_handle *stmt_res, int col_num, short ctype, void *buff, int in_length, SQLINTEGER *out_length)
{
	RETCODE rc = SQL_SUCCESS;
	
	Py_BEGIN_ALLOW_THREADS;
	rc = SQLGetData((SQLHSTMT)stmt_res->hstmt, col_num, ctype, buff, in_length, 
		out_length);
	Py_END_ALLOW_THREADS;
	
	if ( rc == SQL_ERROR ) {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, 
			NULL, -1, 1);
	}
	return rc;
}

/*!# ibm_db.result
 *
 * ===Description
 * mixed ibm_db.result ( resource stmt, mixed column )
 *
 * Returns a single column from a row in the result set
 *
 * Use ibm_db.result() to return the value of a specified column in the current  * row of a result set. You must call ibm_db.fetch_row() before calling
 * ibm_db.result() to set the location of the result set pointer.
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid stmt resource.
 *
 * ====column
 *		Either an integer mapping to the 0-indexed field in the result set, or  * a string matching the name of the column.
 *
 * ===Return Values
 *
 * Returns the value of the requested field if the field exists in the result
 * set. Returns NULL if the field does not exist, and issues a warning.
 */
static PyObject *ibm_db_result(PyObject *self, PyObject *args)
{
	PyObject *py_stmt_res = NULL;
	PyObject *column = NULL;
#if  PY_MAJOR_VERSION >= 3
	PyObject *col_name_py3_tmp = NULL;
#endif
	PyObject *retVal = NULL;
	stmt_handle *stmt_res;
	long col_num;
	RETCODE rc;
	void	*out_ptr;
	DATE_STRUCT *date_ptr;
	TIME_STRUCT *time_ptr;
	TIMESTAMP_STRUCT *ts_ptr;
	char error[DB2_MAX_ERR_MSG_LEN];
	SQLINTEGER in_length, out_length = -10; /* Initialize out_length to some
						* meaningless value
						* */
	SQLSMALLINT column_type, targetCType = SQL_C_CHAR, len_terChar = 0 ;
	double double_val;
	SQLINTEGER long_val;
	PyObject *return_value = NULL;

	if (!PyArg_ParseTuple(args, "OO", &py_stmt_res, &column))
		return NULL;

	if (!NIL_P(py_stmt_res)) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}

		if ( TYPE(column) == PYTHON_FIXNUM ) {
			col_num = PyLong_AsLong(column);
			
		} else if (PyString_Check(column)) { 
#if  PY_MAJOR_VERSION >= 3
			col_name_py3_tmp = PyUnicode_AsASCIIString(column);
			if (col_name_py3_tmp == NULL) {
				return NULL;
			}
			column = col_name_py3_tmp;
#endif
			col_num = _python_ibm_db_get_column_by_name(stmt_res, PyBytes_AsString(column), -1);
#if  PY_MAJOR_VERSION >= 3
			if ( col_name_py3_tmp != NULL ) {
				Py_XDECREF(col_name_py3_tmp);
			}
#endif
		} else {
			/* Column argument has to be either an integer or string */
			Py_RETURN_FALSE;
		}

	/* get column header info */
	if ( stmt_res->column_info == NULL ) {
		if (_python_ibm_db_get_result_set_info(stmt_res)<0) {
			sprintf(error, "Column information cannot be retrieved: %s", 
					IBM_DB_G(__python_stmt_err_msg));
			strcpy(IBM_DB_G(__python_stmt_err_msg), error);
			PyErr_Clear();
			Py_RETURN_FALSE;
		}
	}

	if(col_num < 0 || col_num >= stmt_res->num_columns) {
		strcpy(IBM_DB_G(__python_stmt_err_msg), "Column ordinal out of range");
		PyErr_Clear();
		Py_RETURN_NONE;
	}

	/* get the data */
	column_type = stmt_res->column_info[col_num].type;
	switch(column_type) {
		case SQL_CHAR:
		case SQL_VARCHAR:
		case SQL_WCHAR:
		case SQL_WVARCHAR:
		case SQL_GRAPHIC:
		case SQL_VARGRAPHIC:
#ifndef PASE /* i5/OS SQL_LONGVARCHAR is SQL_VARCHAR */
		case SQL_LONGVARCHAR:
		case SQL_LONGVARGRAPHIC:
#endif /* PASE */
		case SQL_BIGINT:
		case SQL_DECIMAL:
		case SQL_NUMERIC:
		case SQL_DECFLOAT:
			if (column_type == SQL_DECIMAL || column_type == SQL_NUMERIC){
				in_length = stmt_res->column_info[col_num].size + 
							stmt_res->column_info[col_num].scale + 2 + 1;
			}
			else{
				in_length = stmt_res->column_info[col_num].size+1;
			}
			out_ptr = (SQLPOINTER)ALLOC_N(Py_UNICODE, in_length);

			if ( out_ptr == NULL ) {
				PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
				return NULL;
			}

			rc = _python_ibm_db_get_data(stmt_res, col_num+1, SQL_C_WCHAR, 
						 out_ptr, in_length * sizeof(Py_UNICODE), &out_length);

			if ( rc == SQL_ERROR ) {
				if(out_ptr != NULL) {
					PyMem_Del(out_ptr);
					out_ptr = NULL;
				}
				PyErr_Clear();
				Py_RETURN_FALSE;
			}
			if (out_length == SQL_NULL_DATA) {
				Py_INCREF(Py_None);
				return_value = Py_None;
			} else if (column_type == SQL_BIGINT){
				return_value = PyLong_FromString(out_ptr, NULL, 0);
			} else {
				return_value = getSQLWCharAsPyUnicodeObject(out_ptr, out_length);
			}
			PyMem_Del(out_ptr);
			out_ptr = NULL;
			return return_value;

		case SQL_TYPE_DATE:
			date_ptr = ALLOC(DATE_STRUCT);
			if (date_ptr == NULL) {
				PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
				return NULL;
			}

			rc = _python_ibm_db_get_data(stmt_res, col_num+1, SQL_C_TYPE_DATE,
						date_ptr, sizeof(DATE_STRUCT), &out_length);

			if ( rc == SQL_ERROR ) {
				if(date_ptr != NULL) {
					PyMem_Del(date_ptr);
					date_ptr = NULL;
				}
				PyErr_Clear();
				Py_RETURN_FALSE;
			}
			if (out_length == SQL_NULL_DATA) {
				PyMem_Del(date_ptr);
				date_ptr = NULL;
				Py_RETURN_NONE;
			} else {
				return_value = PyDate_FromDate(date_ptr->year, date_ptr->month, date_ptr->day);
				PyMem_Del(date_ptr);
				date_ptr = NULL;
				return return_value;
			}
			break;

		case SQL_TYPE_TIME:
			time_ptr = ALLOC(TIME_STRUCT);
			if (time_ptr == NULL) {
				PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
				return NULL;
			}

			rc = _python_ibm_db_get_data(stmt_res, col_num+1, SQL_C_TYPE_TIME,
						time_ptr, sizeof(TIME_STRUCT), &out_length);

			if ( rc == SQL_ERROR ) {
				if(time_ptr != NULL) {
					PyMem_Del(time_ptr);
					time_ptr = NULL;
				}
				PyErr_Clear();
				Py_RETURN_FALSE;
			}

			if (out_length == SQL_NULL_DATA) {
				PyMem_Del(time_ptr);
				time_ptr = NULL;
				Py_RETURN_NONE;
			} else {
				return_value = PyTime_FromTime(time_ptr->hour, time_ptr->minute, time_ptr->second, 0);
				PyMem_Del(time_ptr);
				time_ptr = NULL;
				return return_value;
			}
			break;

		case SQL_TYPE_TIMESTAMP:
			ts_ptr = ALLOC(TIMESTAMP_STRUCT);
			if (ts_ptr == NULL) {
				PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
				return NULL;
			}

			rc = _python_ibm_db_get_data(stmt_res, col_num+1, SQL_C_TYPE_TIMESTAMP,
						ts_ptr, sizeof(TIMESTAMP_STRUCT), &out_length);

			if ( rc == SQL_ERROR ) {
				if(ts_ptr != NULL) {
					PyMem_Del(ts_ptr);
					time_ptr = NULL;
				}
				PyErr_Clear();
				Py_RETURN_FALSE;
			}

			if (out_length == SQL_NULL_DATA) {
				PyMem_Del(ts_ptr);
				ts_ptr = NULL;
				Py_RETURN_NONE;
			} else {
				return_value = PyDateTime_FromDateAndTime(ts_ptr->year, ts_ptr->month, ts_ptr->day, ts_ptr->hour, ts_ptr->minute, ts_ptr->second, ts_ptr->fraction / 1000);
				PyMem_Del(ts_ptr);
				ts_ptr = NULL;
				return return_value;
			}
			break;

		case SQL_SMALLINT:
		case SQL_INTEGER:
			rc = _python_ibm_db_get_data(stmt_res, col_num+1, SQL_C_LONG, 
						 &long_val, sizeof(long_val), 
						 &out_length);
			if ( rc == SQL_ERROR ) {
				PyErr_Clear();
				Py_RETURN_FALSE;
			}
			if (out_length == SQL_NULL_DATA) {
				Py_RETURN_NONE;
			} else {
				return PyInt_FromLong(long_val);
			}
			break;

		case SQL_REAL:
		case SQL_FLOAT:
		case SQL_DOUBLE:
			rc = _python_ibm_db_get_data(stmt_res, col_num+1, SQL_C_DOUBLE, 
						 &double_val, sizeof(double_val), 
						 &out_length);
			if ( rc == SQL_ERROR ) {
				PyErr_Clear();
				Py_RETURN_FALSE;
			}
			if (out_length == SQL_NULL_DATA) {
				Py_RETURN_NONE;
			} else {
				return PyFloat_FromDouble(double_val);
			}
			break;

		case SQL_BLOB:
		case SQL_BINARY:
#ifndef PASE /* i5/OS SQL_LONGVARCHAR is SQL_VARCHAR */
		case SQL_LONGVARBINARY:
#endif /* PASE */
		case SQL_VARBINARY:
			switch (stmt_res->s_bin_mode) {
				case PASSTHRU:
					return PyBytes_FromStringAndSize("", 0);
					break;
					/* returns here */
				case CONVERT:
					targetCType = SQL_C_CHAR;
					len_terChar = sizeof(char);
					break;
				case BINARY:
					targetCType = SQL_C_BINARY;
					len_terChar = 0;
					break;
				default:
					Py_RETURN_FALSE;
			}
		case SQL_XML:
		case SQL_CLOB:
		case SQL_DBCLOB:
			if (column_type == SQL_CLOB || column_type == SQL_DBCLOB || column_type == SQL_XML) {
				len_terChar = sizeof(SQLWCHAR);
				targetCType = SQL_C_WCHAR;
			}
			out_ptr = ALLOC_N(char, INIT_BUFSIZ + len_terChar);
			if ( out_ptr == NULL ) {
				 PyErr_SetString(PyExc_Exception,
						"Failed to Allocate Memory for XML Data");
				return NULL;
			}
			rc = _python_ibm_db_get_data(stmt_res, col_num + 1, targetCType, out_ptr, 
					INIT_BUFSIZ + len_terChar, &out_length);
			if ( rc == SQL_SUCCESS_WITH_INFO ) {
				void *tmp_out_ptr = NULL;

				tmp_out_ptr = ALLOC_N(char, out_length + INIT_BUFSIZ + len_terChar);
				memcpy(tmp_out_ptr, out_ptr, INIT_BUFSIZ);
				PyMem_Del(out_ptr);
				out_ptr = tmp_out_ptr;

				rc = _python_ibm_db_get_data(stmt_res, col_num + 1, targetCType, (char *)out_ptr + INIT_BUFSIZ,
					out_length + len_terChar, &out_length);
				if (rc == SQL_ERROR) {
					PyMem_Del(out_ptr);
					out_ptr = NULL;
					return NULL;
				}
				if (len_terChar == sizeof(SQLWCHAR)) {
					retVal = getSQLWCharAsPyUnicodeObject(out_ptr, INIT_BUFSIZ + out_length);
				} else {
					retVal = PyBytes_FromStringAndSize((char *)out_ptr, INIT_BUFSIZ + out_length);
				}
			} else if ( rc == SQL_ERROR ) {
				PyMem_Del(out_ptr);
				out_ptr = NULL;
				Py_RETURN_FALSE;
			} else {
				if (out_length == SQL_NULL_DATA) {
					Py_INCREF(Py_None);
					retVal = Py_None;
				} else {
					if (len_terChar == 0) {
						retVal = PyBytes_FromStringAndSize((char *)out_ptr, out_length);
					} else {
						retVal = getSQLWCharAsPyUnicodeObject(out_ptr, out_length);
					}
				}

			}
			if (out_ptr != NULL) {
				PyMem_Del(out_ptr);
				out_ptr = NULL;
			}
			return retVal;
		default:
			break;
		}
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
	}
	Py_RETURN_FALSE;
}

/* static void _python_ibm_db_bind_fetch_helper(INTERNAL_FUNCTION_PARAMETERS, 
												int op)
*/
static PyObject *_python_ibm_db_bind_fetch_helper(PyObject *args, int op)
{
	int rc = -1;
	int column_number;
	SQLINTEGER row_number = -1;
	stmt_handle *stmt_res = NULL;
	SQLSMALLINT column_type ;
	ibm_db_row_data_type *row_data;
	SQLINTEGER out_length, tmp_length = 0;
	void *out_ptr = NULL;
	SQLWCHAR *wout_ptr = NULL;
	int len_terChar = 0;
	SQLSMALLINT targetCType = SQL_C_CHAR;
	PyObject *py_stmt_res = NULL;
	PyObject *return_value = NULL;
	PyObject *key = NULL;
	PyObject *value = NULL;
	PyObject *py_row_number = NULL;
	char error[DB2_MAX_ERR_MSG_LEN];
	
	if (!PyArg_ParseTuple(args, "O|O", &py_stmt_res, &py_row_number))
		return NULL;
	
	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString(PyExc_Exception, "Supplied statement object parameter is invalid");
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}

	if (!NIL_P(py_row_number)) {
		if (PyInt_Check(py_row_number)) {
			row_number = (SQLINTEGER) PyInt_AsLong(py_row_number);
		} else {
			PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
			return NULL;
		}
	}
	_python_ibm_db_init_error_info(stmt_res);

	/* get column header info */
	if ( stmt_res->column_info == NULL ) {
		if (_python_ibm_db_get_result_set_info(stmt_res)<0) {
			sprintf(error, "Column information cannot be retrieved: %s", 
				IBM_DB_G(__python_stmt_err_msg));
			PyErr_SetString(PyExc_Exception, error);
			return NULL;
		}
	}
	/* bind the data */
	if ( stmt_res->row_data == NULL ) {
		rc = _python_ibm_db_bind_column_helper(stmt_res);
		if ( rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO ) {
			sprintf(error, "Column binding cannot be done: %s", 
				IBM_DB_G(__python_stmt_err_msg));
			PyErr_SetString(PyExc_Exception, error);
			return NULL;
		}
	}
	/* check if row_number is present */
	if (PyTuple_Size(args) == 2 && row_number > 0) {
#ifndef PASE /* i5/OS problem with SQL_FETCH_ABSOLUTE (temporary until fixed) */
		if (is_systemi) {

			Py_BEGIN_ALLOW_THREADS;
			rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_FIRST, 
				row_number);
			Py_END_ALLOW_THREADS;
			
			if (row_number>1 && (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO))
				Py_BEGIN_ALLOW_THREADS;
				rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_RELATIVE, 
				row_number-1);
				Py_END_ALLOW_THREADS;
		} else {
			Py_BEGIN_ALLOW_THREADS;
			rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_ABSOLUTE, 
				row_number);
			Py_END_ALLOW_THREADS;
		}
#else /* PASE */
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_FIRST, 
			row_number);
		Py_END_ALLOW_THREADS;

		if (row_number>1 && (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO))
			Py_BEGIN_ALLOW_THREADS;

			rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_RELATIVE, 
			row_number-1);

			Py_END_ALLOW_THREADS;
#endif /* PASE */
	} else if (PyTuple_Size(args) == 2 && row_number < 0) {
		PyErr_SetString(PyExc_Exception, 
			"Requested row number must be a positive value");
		return NULL;
	} else {
		/* row_number is NULL or 0; just fetch next row */
		Py_BEGIN_ALLOW_THREADS;

		rc = SQLFetch((SQLHSTMT)stmt_res->hstmt);

		Py_END_ALLOW_THREADS;
	}

	if (rc == SQL_NO_DATA_FOUND) {
		Py_INCREF(Py_False);
		return Py_False;
	} else if ( rc != SQL_SUCCESS && rc != SQL_SUCCESS_WITH_INFO) {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, 
			NULL, -1, 1);
		sprintf(error, "Fetch Failure: %s", IBM_DB_G(__python_stmt_err_msg));
		PyErr_SetString(PyExc_Exception, error);
		return NULL;
	}
	/* copy the data over return_value */
	if ( op & FETCH_ASSOC ) {
		return_value = PyDict_New();
	} else if ( op == FETCH_INDEX ) {
		return_value = PyTuple_New(stmt_res->num_columns);
	}

	for (column_number = 0; column_number < stmt_res->num_columns; column_number++) {
		column_type = stmt_res->column_info[column_number].type;
		row_data = &stmt_res->row_data[column_number].data;
		out_length = stmt_res->row_data[column_number].out_length;

		switch(stmt_res->s_case_mode) {
			case CASE_LOWER:
				stmt_res->column_info[column_number].name = 
					(SQLCHAR*)strtolower((char*)stmt_res->column_info[column_number].name, 
					strlen((char*)stmt_res->column_info[column_number].name));
				break;
			case CASE_UPPER:
				stmt_res->column_info[column_number].name = 
					(SQLCHAR*)strtoupper((char*)stmt_res->column_info[column_number].name, 
					strlen((char*)stmt_res->column_info[column_number].name));
				break;
			case CASE_NATURAL:
			default:
					break;
		}
		if (out_length == SQL_NULL_DATA) {
			Py_INCREF(Py_None);
			value = Py_None;
		} else {
			switch(column_type) {
				case SQL_CHAR:
				case SQL_VARCHAR:
				case SQL_WCHAR:
				case SQL_WVARCHAR:
				case SQL_GRAPHIC:
				case SQL_VARGRAPHIC:
				case SQL_LONGVARGRAPHIC:
					tmp_length = stmt_res->column_info[column_number].size;
					value = getSQLWCharAsPyUnicodeObject(row_data->w_val, out_length);
					break;

#ifndef PASE /* i5/OS SQL_LONGVARCHAR is SQL_VARCHAR */
				case SQL_LONGVARCHAR:
				case SQL_WLONGVARCHAR:

#endif /* PASE */
					/* i5/OS will xlate from EBCIDIC to ASCII (via SQLGetData) */
					tmp_length = stmt_res->column_info[column_number].size;

					wout_ptr = (SQLWCHAR *)ALLOC_N(SQLWCHAR, tmp_length + 1);
					if ( wout_ptr == NULL ) {
						PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
						return NULL;
					}
					
					/*  _python_ibm_db_get_data null terminates all output. */
					rc = _python_ibm_db_get_data(stmt_res, column_number + 1, SQL_C_WCHAR, wout_ptr,
						(tmp_length * sizeof(SQLWCHAR) + 1), &out_length);
					if ( rc == SQL_ERROR ) {
						return NULL;
					}
					if (out_length == SQL_NULL_DATA) {
						Py_INCREF(Py_None);
						value = Py_None;
					} else {
						value = getSQLWCharAsPyUnicodeObject(wout_ptr, out_length);
					}
					if (wout_ptr != NULL) {
						PyMem_Del(wout_ptr);
						wout_ptr = NULL;
					}
					break;
				
				case SQL_DECIMAL:
				case SQL_NUMERIC:
				case SQL_DECFLOAT:
					value = StringOBJ_FromASCII((char *)row_data->str_val);
					break;

				case SQL_TYPE_DATE:
					value = PyDate_FromDate(row_data->date_val->year, row_data->date_val->month, row_data->date_val->day);
					break;

				case SQL_TYPE_TIME:
					value = PyTime_FromTime(row_data->time_val->hour, row_data->time_val->minute, row_data->time_val->second, 0);
					break;

				case SQL_TYPE_TIMESTAMP:
					value = PyDateTime_FromDateAndTime(row_data->ts_val->year, row_data->ts_val->month, row_data->ts_val->day,
									row_data->ts_val->hour, row_data->ts_val->minute, row_data->ts_val->second,
									row_data->ts_val->fraction / 1000);
					break;

				case SQL_BIGINT:
					value = PyLong_FromString((char *)row_data->str_val, NULL, 10);
					break;

				case SQL_SMALLINT:
					value = PyInt_FromLong(row_data->s_val);
					break;

				case SQL_INTEGER:
					value = PyInt_FromLong(row_data->i_val);
					break;

				case SQL_REAL:
					value = PyFloat_FromDouble(row_data->r_val);
					break;

				case SQL_FLOAT:
					value = PyFloat_FromDouble(row_data->f_val);
					break;

				case SQL_DOUBLE:
					value = PyFloat_FromDouble(row_data->d_val);
					break;

				case SQL_BINARY:
#ifndef PASE /* i5/OS SQL_LONGVARBINARY is SQL_VARBINARY */
				case SQL_LONGVARBINARY:
#endif /* PASE */
				case SQL_VARBINARY:
					if ( stmt_res->s_bin_mode == PASSTHRU ) {
						value = PyBytes_FromStringAndSize("", 0);
					} else {
						value = PyBytes_FromStringAndSize((char *)row_data->str_val, out_length);
					}
					break;

				case SQL_BLOB:
					switch (stmt_res->s_bin_mode) {
						case PASSTHRU:
							Py_RETURN_NONE;
							break;
						case CONVERT:
							len_terChar = sizeof(char);
							targetCType = SQL_C_CHAR;
							break;
						case BINARY:
							len_terChar = 0;
							targetCType = SQL_C_BINARY;
							break;
						default:
							len_terChar = -1;
							break;
					}
				case SQL_XML:
				case SQL_CLOB:
				case SQL_DBCLOB:
					if (column_type == SQL_CLOB || column_type == SQL_DBCLOB || column_type == SQL_XML) {
						len_terChar = sizeof(SQLWCHAR);
						targetCType = SQL_C_WCHAR;
					} else if (len_terChar == -1) {
						break;
					}
					out_ptr = (void *)ALLOC_N(char, INIT_BUFSIZ + len_terChar);
					if (out_ptr == NULL) {
						PyErr_SetString(PyExc_Exception,
							"Failed to Allocate Memory for LOB Data");
						return NULL;
					}
					rc = _python_ibm_db_get_data(stmt_res, column_number + 1, targetCType, out_ptr,
						INIT_BUFSIZ + len_terChar, &out_length);
					if (rc == SQL_SUCCESS_WITH_INFO) {
						void *tmp_out_ptr = NULL;

						tmp_out_ptr = (void *)ALLOC_N(char, out_length + INIT_BUFSIZ + len_terChar);
						memcpy(tmp_out_ptr, out_ptr, INIT_BUFSIZ);
						PyMem_Del(out_ptr);
						out_ptr = tmp_out_ptr;

						rc = _python_ibm_db_get_data(stmt_res, column_number + 1, targetCType, (char *)out_ptr + INIT_BUFSIZ,
							out_length + len_terChar, &out_length);
						if (rc == SQL_ERROR) {
							if (out_ptr != NULL) {
								PyMem_Del(out_ptr);
								out_ptr = NULL;
							}
							sprintf(error, "Failed to fetch LOB Data: %s",
								IBM_DB_G(__python_stmt_err_msg));
							PyErr_SetString(PyExc_Exception, error);
							return NULL;
						}
						
						if (len_terChar == sizeof(SQLWCHAR)) {
							value = getSQLWCharAsPyUnicodeObject(out_ptr, INIT_BUFSIZ + out_length);
						} else {
							value = PyBytes_FromStringAndSize((char*)out_ptr, INIT_BUFSIZ + out_length);
						}
					} else if ( rc == SQL_ERROR ) {
						PyMem_Del(out_ptr);
						out_ptr = NULL;
						sprintf(error, "Failed to LOB Data: %s", 
							IBM_DB_G(__python_stmt_err_msg));
						PyErr_SetString(PyExc_Exception, error);
						return NULL;
					} else {
						if (out_length == SQL_NULL_DATA) {
							Py_INCREF(Py_None);
							value = Py_None;
						} else {
							if (len_terChar == sizeof(SQLWCHAR)) {
								value =  getSQLWCharAsPyUnicodeObject(out_ptr, out_length);
							} else {
								value = PyBytes_FromStringAndSize((char*)out_ptr, out_length);
							}
						}
					}
					if (out_ptr != NULL) {
						PyMem_Del(out_ptr);
						out_ptr = NULL;
					}
					break;

				default:
					Py_INCREF(Py_None);
					value = Py_None;
					break;
				}
		}
		if (op & FETCH_ASSOC) {
			key = StringOBJ_FromASCII((char*)stmt_res->column_info[column_number].name);
			PyDict_SetItem(return_value, key, value);
			Py_DECREF(key);
		}
		if (op == FETCH_INDEX) {
			/* No need to call Py_DECREF as PyTuple_SetItem steals the reference */
			PyTuple_SetItem(return_value, column_number, value);
		} else {
			if (op == FETCH_BOTH) {
				key = PyInt_FromLong(column_number);
				PyDict_SetItem(return_value, key, value);
				Py_DECREF(key);
			}
			Py_DECREF(value);
		}
	}
	return return_value;
}

/*!# ibm_db.fetch_row
 *
 * ===Description
 * bool ibm_db.fetch_row ( resource stmt [, int row_number] )
 *
 * Sets the result set pointer to the next row or requested row
 *
 * Use ibm_db.fetch_row() to iterate through a result set, or to point to a
 * specific row in a result set if you requested a scrollable cursor.
 *
 * To retrieve individual fields from the result set, call the ibm_db.result()
 * function. Rather than calling ibm_db.fetch_row() and ibm_db.result(), most
 * applications will call one of ibm_db.fetch_assoc(), ibm_db.fetch_both(), or
 * ibm_db.fetch_array() to advance the result set pointer and return a complete
 * row as an array.
 *
 * ===Parameters
 * ====stmt
 *		A valid stmt resource.
 *
 * ====row_number
 *		With scrollable cursors, you can request a specific row number in the
 * result set. Row numbering is 1-indexed.
 *
 * ===Return Values
 *
 * Returns TRUE if the requested row exists in the result set. Returns FALSE if
 * the requested row does not exist in the result set.
 */
static PyObject *ibm_db_fetch_row(PyObject *self, PyObject *args)			
{
	PyObject *py_stmt_res = NULL;
	PyObject *py_row_number = NULL;
	SQLINTEGER row_number = -1;
	stmt_handle* stmt_res = NULL;
	int rc;
	char error[DB2_MAX_ERR_MSG_LEN];

	if (!PyArg_ParseTuple(args, "O|O", &py_stmt_res, &py_row_number))
		return NULL;

	if (NIL_P(py_stmt_res) || (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType))) {
		PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
		return NULL;
	} else {
		stmt_res = (stmt_handle *)py_stmt_res;
	}

	if (!NIL_P(py_row_number)) {
		if (PyInt_Check(py_row_number)) {
			row_number = (SQLINTEGER) PyInt_AsLong(py_row_number);
		} else {
			PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
			return NULL;
		}
	}
	/* get column header info */
	if ( stmt_res->column_info == NULL ) {
		if (_python_ibm_db_get_result_set_info(stmt_res)<0) {
			sprintf(error, "Column information cannot be retrieved: %s", 
				 IBM_DB_G(__python_stmt_err_msg));
			PyErr_SetString(PyExc_Exception, error);
			return NULL;	
		}
	}

	/* check if row_number is present */
	if (PyTuple_Size(args) == 2 && row_number > 0) { 
#ifndef PASE /* i5/OS problem with SQL_FETCH_ABSOLUTE */

		rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_ABSOLUTE, 
						  row_number);
#else /* PASE */
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_FIRST, 
						  row_number);
		Py_END_ALLOW_THREADS;

		if (row_number>1 && (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO))
			Py_BEGIN_ALLOW_THREADS;
			rc = SQLFetchScroll((SQLHSTMT)stmt_res->hstmt, SQL_FETCH_RELATIVE, 
							 row_number-1);
			Py_END_ALLOW_THREADS;
#endif /* PASE */
	} else if (PyTuple_Size(args) == 2 && row_number < 0) {
		PyErr_SetString(PyExc_Exception, 
				  "Requested row number must be a positive value");
		return NULL;
	} else {
		/* row_number is NULL or 0; just fetch next row */
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLFetch((SQLHSTMT)stmt_res->hstmt);
		Py_END_ALLOW_THREADS;
	}

	if (rc == SQL_SUCCESS || rc == SQL_SUCCESS_WITH_INFO) {
		Py_RETURN_TRUE;
	} else if (rc == SQL_NO_DATA_FOUND) {
		Py_RETURN_FALSE;
	} else {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1,
								  NULL, -1, 1);
		PyErr_Clear();
		Py_RETURN_FALSE;
	}
}

/*!# ibm_db.fetch_assoc
 *
 * ===Description
 * dictionary ibm_db.fetch_assoc ( resource stmt [, int row_number] )
 *
 * Returns a dictionary, indexed by column name, representing a row in a result  * set.
 *
 * ===Parameters
 * ====stmt
 *		A valid stmt resource containing a result set.
 *
 * ====row_number
 *
 *		Requests a specific 1-indexed row from the result set. Passing this
 * parameter results in a
 *		Python warning if the result set uses a forward-only cursor.
 *
 * ===Return Values
 *
 * Returns an associative array with column values indexed by the column name
 * representing the next
 * or requested row in the result set. Returns FALSE if there are no rows left
 * in the result set,
 * or if the row requested by row_number does not exist in the result set.
 */
static PyObject *ibm_db_fetch_assoc(PyObject *self, PyObject *args)			
{
	return _python_ibm_db_bind_fetch_helper(args, FETCH_ASSOC);
}


/*
 * ibm_db.fetch_object --	Returns an object with properties representing columns in the fetched row
 * 
 * ===Description
 * object ibm_db.fetch_object ( resource stmt [, int row_number] )
 * 
 * Returns an object in which each property represents a column returned in the row fetched from a result set.
 * 
 * ===Parameters
 * 
 * stmt
 *		A valid stmt resource containing a result set. 
 * 
 * row_number
 *		Requests a specific 1-indexed row from the result set. Passing this parameter results in a
 *		Python warning if the result set uses a forward-only cursor. 
 * 
 * ===Return Values
 * 
 * Returns an object representing a single row in the result set. The properties of the object map
 * to the names of the columns in the result set.
 * 
 * The IBM DB2, Cloudscape, and Apache Derby database servers typically fold column names to upper-case,
 * so the object properties will reflect that case.
 * 
 * If your SELECT statement calls a scalar function to modify the value of a column, the database servers
 * return the column number as the name of the column in the result set. If you prefer a more
 * descriptive column name and object property, you can use the AS clause to assign a name
 * to the column in the result set.
 * 
 * Returns FALSE if no row was retrieved. 
 */
/*
PyObject *ibm_db_fetch_object(int argc, PyObject **argv, PyObject *self)
{
	row_hash_struct *row_res;

	row_res = ALLOC(row_hash_struct);
	row_res->hash = _python_ibm_db_bind_fetch_helper(argc, argv, FETCH_ASSOC);

	if (RTEST(row_res->hash)) {
	  return Data_Wrap_Struct(le_row_struct,
			_python_ibm_db_mark_row_struct, _python_ibm_db_free_row_struct,
			row_res);
	} else {
	  free(row_res);
	  return Py_False;
	}
}
*/

/*!# ibm_db.fetch_array
 *
 * ===Description
 *
 * array ibm_db.fetch_array ( resource stmt [, int row_number] )
 *
 * Returns a tuple, indexed by column position, representing a row in a result
 * set. The columns are 0-indexed.
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid stmt resource containing a result set.
 *
 * ====row_number
 *		Requests a specific 1-indexed row from the result set. Passing this
 * parameter results in a warning if the result set uses a forward-only cursor.
 *
 * ===Return Values
 *
 * Returns a 0-indexed tuple with column values indexed by the column position
 * representing the next or requested row in the result set. Returns FALSE if
 * there are no rows left in the result set, or if the row requested by
 * row_number does not exist in the result set.
 */
static PyObject *ibm_db_fetch_array(PyObject *self, PyObject *args)
{
	return _python_ibm_db_bind_fetch_helper(args, FETCH_INDEX);
}

/*!# ibm_db.fetch_both
 *
 * ===Description
 * dictionary ibm_db.fetch_both ( resource stmt [, int row_number] )
 *
 * Returns a dictionary, indexed by both column name and position, representing  * a row in a result set. Note that the row returned by ibm_db.fetch_both()
 * requires more memory than the single-indexed dictionaries/arrays returned by  * ibm_db.fetch_assoc() or ibm_db.fetch_tuple().
 *
 * ===Parameters
 *
 * ====stmt
 *		A valid stmt resource containing a result set.
 *
 * ====row_number
 *		Requests a specific 1-indexed row from the result set. Passing this
 * parameter results in a warning if the result set uses a forward-only cursor.
 *
 * ===Return Values
 *
 * Returns a dictionary with column values indexed by both the column name and
 * 0-indexed column number.
 * The dictionary represents the next or requested row in the result set.
 * Returns FALSE if there are no rows left in the result set, or if the row
 * requested by row_number does not exist in the result set.
 */
static PyObject *ibm_db_fetch_both(PyObject *self, PyObject *args)
{
	return _python_ibm_db_bind_fetch_helper(args, FETCH_BOTH);
}

/*!# ibm_db.set_option
 *
 * ===Description
 * bool ibm_db.set_option ( resource resc, array options, int type )
 *
 * Sets options for a connection or statement resource. You cannot set options
 * for result set resources.
 *
 * ===Parameters
 *
 * ====resc
 *		A valid connection or statement resource.
 *
 * ====options
 *		The options to be set
 *
 * ====type
 *		A field that specifies the resource type (1 = Connection,
 * NON-1 = Statement)
 *
 * ===Return Values
 *
 * Returns TRUE on success or FALSE on failure
 */
static PyObject *ibm_db_set_option(PyObject *self, PyObject *args)
{
	PyObject *conn_or_stmt = NULL;
	PyObject *options = NULL;
	PyObject *py_type = NULL;
	stmt_handle *stmt_res = NULL;
	conn_handle *conn_res;
	int rc = 0;
	long type = 0;

	if (!PyArg_ParseTuple(args, "OOO", &conn_or_stmt, &options, &py_type))
		return NULL;

	if (!NIL_P(conn_or_stmt)) {
		if (!NIL_P(py_type)) {
			if (PyInt_Check(py_type)) {
				type = (int) PyInt_AsLong(py_type);
			} else {
				PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
				return NULL;
			}
		}
		if ( type == 1 ) {
			if (!PyObject_TypeCheck(conn_or_stmt, &conn_handleType)) {
				PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
				return NULL;
			}
			conn_res = (conn_handle *)conn_or_stmt;

			if ( !NIL_P(options) ) {
				rc = _python_ibm_db_parse_options(options, SQL_HANDLE_DBC, 
					conn_res);
				if (rc == SQL_ERROR) {
					PyErr_SetString(PyExc_Exception, 
						"Options Array must have string indexes");
					return NULL;
				}
			}
		} else {
			if (!PyObject_TypeCheck(conn_or_stmt, &stmt_handleType)) {
				PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
				return NULL;
			}
			stmt_res = (stmt_handle *)conn_or_stmt;				  

			if ( !NIL_P(options) ) {
				rc = _python_ibm_db_parse_options(options, SQL_HANDLE_STMT, 
					stmt_res);
				if (rc == SQL_ERROR) {
					PyErr_SetString(PyExc_Exception, 
						"Options Array must have string indexes");
					return NULL;
				}
			}
		}
		Py_INCREF(Py_True);
		return Py_True;
	} else {
		Py_INCREF(Py_False);
		return Py_False;
	}
}

static PyObject *ibm_db_get_db_info(PyObject *self, PyObject *args) 
{
	PyObject *py_conn_res = NULL;
	PyObject *return_value = NULL;
	PyObject *py_option = NULL;
	SQLINTEGER option = 0;
	conn_handle *conn_res;
	int rc = 0;
	SQLCHAR *value=NULL;

	if (!PyArg_ParseTuple(args, "OO", &py_conn_res, &py_option))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
		if (!NIL_P(py_option)) {
			if (PyInt_Check(py_option)) {
				option = (SQLINTEGER) PyInt_AsLong(py_option);
			} else {
				PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
				return NULL;
			}
		}
		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			return NULL;
		}

		value = (SQLCHAR*)ALLOC_N(char, ACCTSTR_LEN + 1);

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, (SQLSMALLINT)option, (SQLPOINTER)value, 
						ACCTSTR_LEN, NULL);
		Py_END_ALLOW_THREADS;
		
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			if(value != NULL) {
				PyMem_Del(value);
				value = NULL;
			}
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value = StringOBJ_FromASCII((char *)value);
			if(value != NULL) {
				PyMem_Del(value);
				value = NULL;
			}
			return return_value;
		}
	}
	Py_INCREF(Py_False);
	return Py_False;
}

/*!# ibm_db.server_info
 *
 * ===Description
 * object ibm_db.server_info ( resource connection )
 *
 * This function returns a read-only object with information about the IBM DB2
 * or Informix Dynamic Server.
 * The following table lists the database server properties:
 *
 * ====Table 1. Database server properties
 * Property name:: Description (Return type)
 *
 * DBMS_NAME:: The name of the database server to which you are connected. For
 * DB2 servers this is a combination of DB2 followed by the operating system on
 * which the database server is running. (string)
 *
 * DBMS_VER:: The version of the database server, in the form of a string
 * "MM.mm.uuuu" where MM is the major version, mm is the minor version, and
 * uuuu is the update. For example, "08.02.0001" represents major version 8,
 * minor version 2, update 1. (string)
 *
 * DB_CODEPAGE:: The code page of the database to which you are connected. (int)
 *
 * DB_NAME:: The name of the database to which you are connected. (string)
 *
 * DFT_ISOLATION:: The default transaction isolation level supported by the
 * server: (string)
 *
 *						 UR:: Uncommitted read: changes are immediately
 * visible by all concurrent transactions.
 *
 *						 CS:: Cursor stability: a row read by one transaction
 * can be altered and committed by a second concurrent transaction.
 *
 *						 RS:: Read stability: a transaction can add or remove
 * rows matching a search condition or a pending transaction.
 *
 *						 RR:: Repeatable read: data affected by pending
 * transaction is not available to other transactions.
 *
 *						 NC:: No commit: any changes are visible at the end of
 * a successful operation. Explicit commits and rollbacks are not allowed.
 *
 * IDENTIFIER_QUOTE_CHAR:: The character used to delimit an identifier. (string)
 *
 * INST_NAME:: The instance on the database server that contains the database.
 * (string)
 *
 * ISOLATION_OPTION:: An array of the isolation options supported by the
 * database server. The isolation options are described in the DFT_ISOLATION
 * property. (array)
 *
 * KEYWORDS:: An array of the keywords reserved by the database server. (array)
 *
 * LIKE_ESCAPE_CLAUSE:: TRUE if the database server supports the use of % and _
 * wildcard characters. FALSE if the database server does not support these
 * wildcard characters. (bool)
 *
 * MAX_COL_NAME_LEN:: Maximum length of a column name supported by the database
 * server, expressed in bytes. (int)
 *
 * MAX_IDENTIFIER_LEN:: Maximum length of an SQL identifier supported by the
 * database server, expressed in characters. (int)
 *
 * MAX_INDEX_SIZE:: Maximum size of columns combined in an index supported by
 * the database server, expressed in bytes. (int)
 *
 * MAX_PROC_NAME_LEN:: Maximum length of a procedure name supported by the
 * database server, expressed in bytes. (int)
 *
 * MAX_ROW_SIZE:: Maximum length of a row in a base table supported by the
 * database server, expressed in bytes. (int)
 *
 * MAX_SCHEMA_NAME_LEN:: Maximum length of a schema name supported by the
 * database server, expressed in bytes. (int)
 *
 * MAX_STATEMENT_LEN:: Maximum length of an SQL statement supported by the
 * database server, expressed in bytes. (int)
 *
 * MAX_TABLE_NAME_LEN:: Maximum length of a table name supported by the
 * database server, expressed in bytes. (bool)
 *
 * NON_NULLABLE_COLUMNS:: TRUE if the database server supports columns that can
 * be defined as NOT NULL, FALSE if the database server does not support columns
 * defined as NOT NULL. (bool)
 *
 * PROCEDURES:: TRUE if the database server supports the use of the CALL
 * statement to call stored procedures, FALSE if the database server does not
 * support the CALL statement. (bool)
 *
 * SPECIAL_CHARS:: A string containing all of the characters other than a-Z,
 * 0-9, and underscore that can be used in an identifier name. (string)
 *
 * SQL_CONFORMANCE:: The level of conformance to the ANSI/ISO SQL-92
 * specification offered by the database server: (string)
 *
 *							ENTRY:: Entry-level SQL-92 compliance.
 *
 *							FIPS127:: FIPS-127-2 transitional compliance.
 *
 *							FULL:: Full level SQL-92 compliance.
 *
 *							INTERMEDIATE:: Intermediate level SQL-92
 *											compliance.
 *
 * ===Parameters
 *
 * ====connection
 *		Specifies an active DB2 client connection.
 *
 * ===Return Values
 *
 * Returns an object on a successful call. Returns FALSE on failure.
 */
static PyObject *ibm_db_server_info(PyObject *self, PyObject *args)
{
	PyObject *py_conn_res = NULL;
	conn_handle *conn_res;
	int rc = 0;
	char buffer11[11];
	char buffer255[255];
	char buffer2k[2048];
	SQLSMALLINT bufferint16;
	SQLUINTEGER bufferint32;
	SQLINTEGER bitmask;

	le_server_info *return_value = PyObject_NEW(le_server_info,
										 &server_infoType);

	if (!PyArg_ParseTuple(args, "O", &py_conn_res))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}

		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			return NULL;
		}

		/* DBMS_NAME */
		memset(buffer255, 0, sizeof(buffer255));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DBMS_NAME, (SQLPOINTER)buffer255, 
						sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->DBMS_NAME = StringOBJ_FromASCII(buffer255);
		}

		/* DBMS_VER */
		memset(buffer11, 0, sizeof(buffer11));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DBMS_VER, (SQLPOINTER)buffer11, 
					sizeof(buffer11), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
				return_value->DBMS_VER = StringOBJ_FromASCII(buffer11);
		}

#ifndef PASE	  /* i5/OS DB_CODEPAGE handled natively */
		/* DB_CODEPAGE */
		bufferint32 = 0;

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DATABASE_CODEPAGE, &bufferint32, 
						sizeof(bufferint32), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->DB_CODEPAGE = PyInt_FromLong(bufferint32);
		}
#endif /* PASE */

		/* DB_NAME */
		memset(buffer255, 0, sizeof(buffer255));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DATABASE_NAME, (SQLPOINTER)buffer255, 
						sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			Py_INCREF(Py_False);
			return Py_False;
		} else {
			return_value->DB_NAME = StringOBJ_FromASCII(buffer255);
		}

#ifndef PASE	  /* i5/OS INST_NAME handled natively */
		/* INST_NAME */
		memset(buffer255, 0, sizeof(buffer255));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_SERVER_NAME, (SQLPOINTER)buffer255, 
					sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->INST_NAME = StringOBJ_FromASCII(buffer255);
		}

		/* SPECIAL_CHARS */
		memset(buffer255, 0, sizeof(buffer255));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_SPECIAL_CHARACTERS, 
					(SQLPOINTER)buffer255, sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->SPECIAL_CHARS = StringOBJ_FromASCII(buffer255);
		}
#endif /* PASE */

		/* KEYWORDS */
		memset(buffer2k, 0, sizeof(buffer2k));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_KEYWORDS, (SQLPOINTER)buffer2k, 
						sizeof(buffer2k), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			char *keyword, *last;
			PyObject *karray;
			int numkw = 0;
			int count = 0;
		
			for (last = buffer2k; *last; last++) {
				if (*last == ',') {
					numkw++;		 
				}
			}
			karray = PyTuple_New(numkw+1);

			for (keyword = last = buffer2k; *last; last++) {
				if (*last == ',') {
					*last = '\0';
					PyTuple_SetItem(karray, count, StringOBJ_FromASCII(keyword));
					keyword = last+1;
					count++;
				}
			}
			if (*keyword) 
				PyTuple_SetItem(karray, count, StringOBJ_FromASCII(keyword));
			return_value->KEYWORDS = karray;
		}

		/* DFT_ISOLATION */
		bitmask = 0;
		memset(buffer11, 0, sizeof(buffer11));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DEFAULT_TXN_ISOLATION, &bitmask, 
					sizeof(bitmask), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			if( bitmask & SQL_TXN_READ_UNCOMMITTED ) {
				strcpy((char *)buffer11, "UR");
			}
			if( bitmask & SQL_TXN_READ_COMMITTED ) {
				strcpy((char *)buffer11, "CS");
			}
			if( bitmask & SQL_TXN_REPEATABLE_READ ) {
				strcpy((char *)buffer11, "RS");
			}
			if( bitmask & SQL_TXN_SERIALIZABLE ) {
				strcpy((char *)buffer11, "RR");
			}
			if( bitmask & SQL_TXN_NOCOMMIT ) {
				strcpy((char *)buffer11, "NC");
			}
			return_value->DFT_ISOLATION = StringOBJ_FromASCII(buffer11);
		}

#ifndef PASE	  /* i5/OS ISOLATION_OPTION handled natively */
		/* ISOLATION_OPTION */
		bitmask = 0;
		memset(buffer11, 0, sizeof(buffer11));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_TXN_ISOLATION_OPTION, &bitmask, 
						sizeof(bitmask), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			PyObject *array;
			int count = 0;

			array = PyTuple_New(5);

			if( bitmask & SQL_TXN_READ_UNCOMMITTED ) {
				PyTuple_SetItem(array, count, StringOBJ_FromASCII("UR"));
				count++;
			}
			if( bitmask & SQL_TXN_READ_COMMITTED ) {
				PyTuple_SetItem(array, count, StringOBJ_FromASCII("CS"));
				count++;
			}
			if( bitmask & SQL_TXN_REPEATABLE_READ ) {
				PyTuple_SetItem(array, count, StringOBJ_FromASCII("RS"));
				count++;
			}
			if( bitmask & SQL_TXN_SERIALIZABLE ) {
				PyTuple_SetItem(array, count, StringOBJ_FromASCII("RR"));
				count++;
			}
			if( bitmask & SQL_TXN_NOCOMMIT ) {
				PyTuple_SetItem(array, count, StringOBJ_FromASCII("NC"));
				count++;
			}
			_PyTuple_Resize(&array, count);

			return_value->ISOLATION_OPTION = array;
		}
#endif /* PASE */

		/* SQL_CONFORMANCE */
		bufferint32 = 0;
		memset(buffer255, 0, sizeof(buffer255));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_ODBC_SQL_CONFORMANCE, &bufferint32, 
					sizeof(bufferint32), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			switch (bufferint32) {
				case SQL_SC_SQL92_ENTRY:
					strcpy((char *)buffer255, "ENTRY");
					break;
				case SQL_SC_FIPS127_2_TRANSITIONAL:
					strcpy((char *)buffer255, "FIPS127");
					break;
				case SQL_SC_SQL92_FULL:
					strcpy((char *)buffer255, "FULL");
					break;
				case SQL_SC_SQL92_INTERMEDIATE:
					strcpy((char *)buffer255, "INTERMEDIATE");
					break;
				default:
					break;
			}
			return_value->SQL_CONFORMANCE = StringOBJ_FromASCII(buffer255);
		}

		/* PROCEDURES */
		memset(buffer11, 0, sizeof(buffer11));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_PROCEDURES, (SQLPOINTER)buffer11, 
						sizeof(buffer11), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			if( strcmp((char *)buffer11, "Y") == 0 ) {
				Py_INCREF(Py_True);
				return_value->PROCEDURES = Py_True;
			} else {
				Py_INCREF(Py_False);
				return_value->PROCEDURES = Py_False;
			}
		}

		/* IDENTIFIER_QUOTE_CHAR */
		memset(buffer11, 0, sizeof(buffer11));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_IDENTIFIER_QUOTE_CHAR, 
				(SQLPOINTER)buffer11, sizeof(buffer11), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->IDENTIFIER_QUOTE_CHAR = StringOBJ_FromASCII(buffer11);
		}

		/* LIKE_ESCAPE_CLAUSE */
		memset(buffer11, 0, sizeof(buffer11));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_LIKE_ESCAPE_CLAUSE, 
						(SQLPOINTER)buffer11, sizeof(buffer11), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			if( strcmp(buffer11, "Y") == 0 ) {
				Py_INCREF(Py_True);
				return_value->LIKE_ESCAPE_CLAUSE = Py_True;
			} else {
				Py_INCREF(Py_False);
				return_value->LIKE_ESCAPE_CLAUSE = Py_False;
			}
		}

		/* MAX_COL_NAME_LEN */
		bufferint16 = 0;

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_MAX_COLUMN_NAME_LEN, &bufferint16, 
					sizeof(bufferint16), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->MAX_COL_NAME_LEN = PyInt_FromLong(bufferint16);
		}

		/* MAX_ROW_SIZE */
		bufferint32 = 0;
		
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_MAX_ROW_SIZE, &bufferint32, 
						sizeof(bufferint32), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->MAX_ROW_SIZE = PyInt_FromLong(bufferint32);
		}

#ifndef PASE	  /* i5/OS MAX_IDENTIFIER_LEN handled natively */
		/* MAX_IDENTIFIER_LEN */
		bufferint16 = 0;

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_MAX_IDENTIFIER_LEN, &bufferint16, 
					sizeof(bufferint16), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->MAX_IDENTIFIER_LEN = PyInt_FromLong(bufferint16);
		}

		/* MAX_INDEX_SIZE */
		bufferint32 = 0;

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_MAX_INDEX_SIZE, &bufferint32, 
					sizeof(bufferint32), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->MAX_INDEX_SIZE = PyInt_FromLong(bufferint32);
		}

		/* MAX_PROC_NAME_LEN */
		bufferint16 = 0;

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_MAX_PROCEDURE_NAME_LEN, &bufferint16, 
						sizeof(bufferint16), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->MAX_PROC_NAME_LEN = PyInt_FromLong(bufferint16);
		}
#endif /* PASE */

		/* MAX_SCHEMA_NAME_LEN */
		bufferint16 = 0;

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_MAX_SCHEMA_NAME_LEN, &bufferint16, 
						sizeof(bufferint16), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->MAX_SCHEMA_NAME_LEN = PyInt_FromLong(bufferint16);
		}

		/* MAX_STATEMENT_LEN */
		bufferint32 = 0;

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_MAX_STATEMENT_LEN, &bufferint32, 
						sizeof(bufferint32), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
										NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->MAX_STATEMENT_LEN = PyInt_FromLong(bufferint32);
		}

		/* MAX_TABLE_NAME_LEN */
		bufferint16 = 0;

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_MAX_TABLE_NAME_LEN, &bufferint16, 
						sizeof(bufferint16), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->MAX_TABLE_NAME_LEN = PyInt_FromLong(bufferint16);
		}

		/* NON_NULLABLE_COLUMNS */
		bufferint16 = 0;

		Py_BEGIN_ALLOW_THREADS;

		rc = SQLGetInfo(conn_res->hdbc, SQL_NON_NULLABLE_COLUMNS, &bufferint16, 
					sizeof(bufferint16), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			PyObject *rv = NULL;
			switch (bufferint16) {
				case SQL_NNC_NON_NULL:
					Py_INCREF(Py_True);
					rv = Py_True;
					break;
				case SQL_NNC_NULL:
					Py_INCREF(Py_False);
					rv = Py_False;
					break;
				default:
					break;
			}
			return_value->NON_NULLABLE_COLUMNS = rv;
		}
		return (PyObject *)return_value;
	}
	Py_RETURN_FALSE;
}

/*!# ibm_db.client_info
 *
 * ===Description
 * object ibm_db.client_info ( resource connection )
 *
 * This function returns a read-only object with information about the IBM Data
 * Server database client. The following table lists the client properties:
 *
 * ====IBM Data Server client properties
 *
 * APPL_CODEPAGE:: The application code page.
 *
 * CONN_CODEPAGE:: The code page for the current connection.
 *
 * DATA_SOURCE_NAME:: The data source name (DSN) used to create the current
 * connection to the database.
 *
 * DRIVER_NAME:: The name of the library that implements the Call Level
 * Interface (CLI) specification.
 *
 * DRIVER_ODBC_VER:: The version of ODBC that the IBM Data Server client
 * supports. This returns a string "MM.mm" where MM is the major version and mm
 * is the minor version. The IBM Data Server client always returns "03.51".
 *
 * DRIVER_VER:: The version of the client, in the form of a string "MM.mm.uuuu"
 * where MM is the major version, mm is the minor version, and uuuu is the
 * update. For example, "08.02.0001" represents major version 8, minor version
 * 2, update 1. (string)
 *
 * ODBC_SQL_CONFORMANCE:: There are three levels of ODBC SQL grammar supported
 * by the client: MINIMAL (Supports the minimum ODBC SQL grammar), CORE
 * (Supports the core ODBC SQL grammar), EXTENDED (Supports extended ODBC SQL
 * grammar).
 *
 * ODBC_VER:: The version of ODBC that the ODBC driver manager supports. This
 * returns a string "MM.mm.rrrr" where MM is the major version, mm is the minor
 * version, and rrrr is the release. The client always returns "03.01.0000".
 *
 * ===Parameters
 *
 * ====connection
 *
 *	  Specifies an active IBM Data Server client connection.
 *
 * ===Return Values
 *
 * Returns an object on a successful call. Returns FALSE on failure.
 */
static PyObject *ibm_db_client_info(PyObject *self, PyObject *args)			
{
	PyObject *py_conn_res = NULL;
	conn_handle *conn_res = NULL;
	int rc = 0;
	char buffer255[255];
	SQLSMALLINT bufferint16;
	SQLUINTEGER bufferint32;

	le_client_info *return_value = PyObject_NEW(le_client_info, 
										 &client_infoType);

	if (!PyArg_ParseTuple(args, "O", &py_conn_res))
		return NULL;

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");
			return NULL;
		}

		/* DRIVER_NAME */
		memset(buffer255, 0, sizeof(buffer255));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DRIVER_NAME, (SQLPOINTER)buffer255, 
					  sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											 NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->DRIVER_NAME = StringOBJ_FromASCII(buffer255);
		}
	
		/* DRIVER_VER */
		memset(buffer255, 0, sizeof(buffer255));
	
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DRIVER_VER, (SQLPOINTER)buffer255, 
						  sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;
	
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											 NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->DRIVER_VER = StringOBJ_FromASCII(buffer255);
		}
	
		/* DATA_SOURCE_NAME */
		memset(buffer255, 0, sizeof(buffer255));
	
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DATA_SOURCE_NAME, 
					(SQLPOINTER)buffer255, sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;
	
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
										 NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->DATA_SOURCE_NAME = StringOBJ_FromASCII(buffer255);
		}

		/* DRIVER_ODBC_VER */
		memset(buffer255, 0, sizeof(buffer255));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_DRIVER_ODBC_VER, 
					  (SQLPOINTER)buffer255, sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;

		if ( rc == SQL_ERROR ) {
		        _python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
													NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->DRIVER_ODBC_VER = StringOBJ_FromASCII(buffer255);
		}

#ifndef PASE	  /* i5/OS ODBC_VER handled natively */
		/* ODBC_VER */
		memset(buffer255, 0, sizeof(buffer255));

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_ODBC_VER, (SQLPOINTER)buffer255, 
						  sizeof(buffer255), NULL);
		Py_END_ALLOW_THREADS;
	
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											 NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->ODBC_VER = StringOBJ_FromASCII(buffer255);
		}
#endif /* PASE */

		/* ODBC_SQL_CONFORMANCE */
		bufferint16 = 0;
		memset(buffer255, 0, sizeof(buffer255));
	
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_ODBC_SQL_CONFORMANCE, &bufferint16, 
					  sizeof(bufferint16), NULL);
		Py_END_ALLOW_THREADS;
	
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											 NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			switch (bufferint16) {
				case SQL_OSC_MINIMUM:
					strcpy((char *)buffer255, "MINIMUM");
					break;
				case SQL_OSC_CORE:
					strcpy((char *)buffer255, "CORE");
					break;
				case SQL_OSC_EXTENDED:
					strcpy((char *)buffer255, "EXTENDED");
					break;
				default:
					break;
			}
			return_value->ODBC_SQL_CONFORMANCE = StringOBJ_FromASCII(buffer255);
		}
	
#ifndef	PASE	  /* i5/OS APPL_CODEPAGE handled natively */
		/* APPL_CODEPAGE */
		bufferint32 = 0;
	
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_APPLICATION_CODEPAGE, &bufferint32, 
					  sizeof(bufferint32), NULL);
		Py_END_ALLOW_THREADS;
	
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
											 NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->APPL_CODEPAGE = PyInt_FromLong(bufferint32);
		}
	
		/* CONN_CODEPAGE */
		bufferint32 = 0;
	
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetInfo(conn_res->hdbc, SQL_CONNECT_CODEPAGE, &bufferint32, 
						  sizeof(bufferint32), NULL);
		Py_END_ALLOW_THREADS;
	
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1, 
										 NULL, -1, 1);
			PyErr_Clear();
			Py_RETURN_FALSE;
		} else {
			return_value->CONN_CODEPAGE = PyInt_FromLong(bufferint32);
		}
#endif /* PASE */

		return (PyObject *)return_value;
	}
	PyErr_Clear();
	Py_RETURN_FALSE;
}

/*!# ibm_db.active
 *
 * ===Description
 * Py_True/Py_False ibm_db.active(resource connection)
 *
 * Checks if the specified connection resource is active
 *
 * Returns Py_True if the given connection resource is active
 *
 * ===Parameters
 * ====connection
 *		The connection resource to be validated.
 *
 * ===Return Values
 *
 * Returns Py_True if the given connection resource is active, otherwise it will
 * return Py_False
 */
static PyObject *ibm_db_active(PyObject *self, PyObject *args)			
{
	PyObject *py_conn_res = NULL;
	int rc;
	conn_handle *conn_res = NULL;
	SQLINTEGER conn_alive;

	conn_alive = 0;

	if (!PyArg_ParseTuple(args, "O", &py_conn_res))
		return NULL;

	if (!(NIL_P(py_conn_res) || (py_conn_res == Py_None))) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
#ifndef PASE
		rc = SQLGetConnectAttr(conn_res->hdbc, SQL_ATTR_PING_DB, 
			(SQLPOINTER)&conn_alive, 0, NULL);
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, rc, 1,
				NULL, -1, 1);
			PyErr_Clear();
		}
#endif /* PASE */
	}
	/*
	* SQLGetConnectAttr with SQL_ATTR_PING_DB will return 0 on failure but will 
	* return the ping time on success.	We only want success or failure.
	*/
	if (conn_alive == 0) {
		Py_RETURN_FALSE;
	} else {
		Py_RETURN_TRUE;
	}
}

/*!# ibm_db.get_option
 *
 * ===Description
 * mixed ibm_db.get_option ( resource resc, int options, int type )
 *
 * Returns a value, that is the current setting of a connection or statement
 * attribute.
 *
 * ===Parameters
 *
 * ====resc
 *		A valid connection or statement resource containing a result set.
 *
 * ====options
 *		The options to be retrieved
 *
 * ====type
 *		A field that specifies the resource type (1 = Connection,
 *		non - 1 = Statement)
 *
 * ===Return Values
 *
 * Returns the current setting of the resource attribute provided.
 */
static PyObject *ibm_db_get_option(PyObject *self, PyObject *args)
{
	PyObject *conn_or_stmt = NULL;
	PyObject *retVal = NULL;
	PyObject *py_op_integer = NULL;
	PyObject *py_type = NULL;
	SQLCHAR *value = NULL;
	SQLINTEGER value_int = 0;
	conn_handle *conn_res = NULL;
	stmt_handle *stmt_res = NULL;
	SQLINTEGER op_integer = 0;
	long type = 0;
	int rc;

	if (!PyArg_ParseTuple(args, "OOO", &conn_or_stmt, &py_op_integer, &py_type))
		return NULL;

	if (!NIL_P(conn_or_stmt)) {
		if (!NIL_P(py_op_integer)) {
			if (PyInt_Check(py_op_integer)) {
				op_integer = (SQLINTEGER) PyInt_AsLong(py_op_integer);
			} else {
				PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
				return NULL;
			}
		}
		if (!NIL_P(py_type)) {
			if (PyInt_Check(py_type)) {
				type = PyInt_AsLong(py_type);
			} else {
				PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
				return NULL;
			}
		}
		/* Checking to see if we are getting a connection option (1) or a 
		* statement option (non - 1) 
		*/
		if (type == 1) {
			if (!PyObject_TypeCheck(conn_or_stmt, &conn_handleType)) {
				PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
				return NULL;
			}
			conn_res = (conn_handle *)conn_or_stmt;

			/* Check to ensure the connection resource given is active */
			if (!conn_res->handle_active) {
				PyErr_SetString(PyExc_Exception, "Connection is not active");
				return NULL;
		 	}
			/* Check that the option given is not null */
			if (!NIL_P(py_op_integer)) {
				/* ACCTSTR_LEN is the largest possible length of the options to 
				* retrieve 
			 */
				value = (SQLCHAR*)ALLOC_N(char, ACCTSTR_LEN + 1);
				if ( value == NULL ) {
					PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
					return NULL;
				}

				rc = SQLGetConnectAttr((SQLHDBC)conn_res->hdbc, op_integer, 
					(SQLPOINTER)value, ACCTSTR_LEN, NULL);
				if (rc == SQL_ERROR) {
					_python_ibm_db_check_sql_errors(conn_res->hdbc, SQL_HANDLE_DBC, 
						rc, 1, NULL, -1, 1);
					if(value != NULL) {
						PyMem_Del(value);
						value = NULL;
					}
					PyErr_Clear();
					Py_RETURN_FALSE;
				}
				retVal = StringOBJ_FromASCII((char *)value);
				if(value != NULL) {
					PyMem_Del(value);
					value = NULL;
				}
				return retVal;
			} else {
				PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
				return NULL;
		 }
			/* At this point we know we are to retreive a statement option */
		} else {
			stmt_res = (stmt_handle *)conn_or_stmt;

			/* Check that the option given is not null */
			if (!NIL_P(py_op_integer)) {
				/* Checking that the option to get is the cursor type because that 
				* is what we support here 
				*/
				if (op_integer == SQL_ATTR_CURSOR_TYPE) {
					rc = SQLGetStmtAttr((SQLHSTMT)stmt_res->hstmt, op_integer, 
						&value_int, SQL_IS_INTEGER, NULL);
					if (rc == SQL_ERROR) {
						_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
						PyErr_Clear();
						Py_RETURN_FALSE;
					}
					return PyInt_FromLong(value_int);
				} else {
					PyErr_SetString(PyExc_Exception,"Supplied parameter is invalid");
					return NULL;
				}
			} else {
				PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
				return NULL;
			}
		}
	}
	PyErr_Clear();
	Py_RETURN_FALSE;
}

static int _ibm_db_chaining_flag(stmt_handle *stmt_res, SQLINTEGER flag, error_msg_node *error_list, int client_err_cnt) {
	int rc;
	Py_BEGIN_ALLOW_THREADS;
	rc = SQLSetStmtAttrW((SQLHSTMT)stmt_res->hstmt, flag, (SQLPOINTER)SQL_TRUE, SQL_IS_INTEGER);
	Py_END_ALLOW_THREADS;
	if ( flag == SQL_ATTR_CHAINING_BEGIN ) {
		if ( rc == SQL_ERROR ) {
			_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
			PyErr_SetString(PyExc_Exception, IBM_DB_G(__python_stmt_err_msg));
		}
	} else {
		if ( (rc != SQL_SUCCESS) || (client_err_cnt != 0) ) {
			SQLINTEGER errNo = 0;
			PyObject *errTuple = NULL;
			SQLINTEGER err_cnt = 0;
			PyObject *err_msg = NULL, *err_fmtObj = NULL;
			char *err_fmt = NULL;
			if ( rc != SQL_SUCCESS ) {
				SQLGetDiagField(SQL_HANDLE_STMT, (SQLHSTMT)stmt_res->hstmt, 0, SQL_DIAG_NUMBER, (SQLPOINTER) &err_cnt, SQL_IS_POINTER, NULL);
			}
			errTuple = PyTuple_New(err_cnt + client_err_cnt);
			err_fmt = (char *)PyMem_Malloc(strlen("%s\nError %d :%s \n ") * (err_cnt + client_err_cnt));
			err_fmt[0] = '\0';
			errNo = 1;
			while( error_list != NULL ) {
				sprintf(err_fmt,"%s\nError %d: %s", err_fmt, (int)errNo, "%s \n");
				PyTuple_SetItem(errTuple, errNo - 1, StringOBJ_FromASCII(error_list->err_msg));
				error_list = error_list->next;
				errNo++;
			}
			for ( errNo = client_err_cnt + 1; errNo <= (err_cnt + client_err_cnt); errNo++ ) {
				sprintf(err_fmt,"%s\nError %d: %s", err_fmt, (int)errNo, "%s \n");
				_python_ibm_db_check_sql_errors((SQLHSTMT)stmt_res->hstmt, SQL_HANDLE_STMT, SQL_ERROR, 1, NULL, -1, (errNo - client_err_cnt));
				PyTuple_SetItem(errTuple, errNo - 1, StringOBJ_FromASCII(IBM_DB_G(__python_stmt_err_msg)));
			}
			err_fmtObj = StringOBJ_FromASCII(err_fmt);
			err_msg = StringObj_Format(err_fmtObj, errTuple);
			if ( err_fmtObj != NULL ) { Py_XDECREF(err_fmtObj); }
			if ( err_fmt != NULL ) { PyMem_Free(err_fmt); }		
			PyErr_SetObject(PyExc_Exception, err_msg);
		}
	}
	return rc;
}

static void _build_client_err_list(error_msg_node *head_error_list, char *err_msg) {
	error_msg_node *tmp_err = NULL, *curr_err = head_error_list->next, *prv_err = NULL;
	tmp_err = ALLOC(error_msg_node);
	memset(tmp_err, 0, sizeof(error_msg_node));
	strcpy(tmp_err->err_msg, err_msg);
	tmp_err->next = NULL;
	while( curr_err != NULL ) {
		prv_err = curr_err;
		curr_err = curr_err->next;
	}

	if ( head_error_list->next == NULL ) {
		head_error_list->next = tmp_err;
	} else {
		prv_err->next = tmp_err;
	}	
} 

/*
 * ibm_db.execute_many -- can be used to execute an SQL with multiple values of parameter marker.
 * ===Description
 * int ibm_db.execute_many(IBM_DBStatement, Parameters[, Options])
 * Returns number of inserted/updated/deleted rows if batch executed successfully.
 * return NULL if batch fully or partialy fails  (All the rows executed except for which error occurs).
 */
static PyObject* ibm_db_execute_many (PyObject *self, PyObject *args) {
	PyObject *options = NULL;
	PyObject *params = NULL;
	PyObject *py_stmt_res = NULL;
	stmt_handle *stmt_res = NULL;
	char error[DB2_MAX_ERR_MSG_LEN];
	PyObject *data = NULL;
	error_msg_node *head_error_list = NULL;
	int err_count = 0;

	int rc;
	int i = 0;
	SQLSMALLINT numOpts = 0;
	int numOfRows = 0;
	int numOfParam = 0;
	SQLINTEGER row_cnt = 0;
	int chaining_start = 0;

	SQLSMALLINT *data_type;
	SQLUINTEGER precision;
	SQLSMALLINT scale;
	SQLSMALLINT nullable;
	SQLSMALLINT *ref_data_type;

	/* Get the parameters 
	 *  	1. statement handler Object
	 *  	2. Parameters
	 *  	3. Options (optional) */
	if ( !PyArg_ParseTuple(args, "OO|O", &py_stmt_res, &params, &options) )
		return NULL;
	
	if ( !NIL_P(py_stmt_res) ) {
		if (!PyObject_TypeCheck(py_stmt_res, &stmt_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied statement object parameter is invalid" );
			return NULL;
		} else {
			stmt_res = (stmt_handle *)py_stmt_res;
		}
		/* Free any cursors that might have been allocated in a previous call to SQLExecute */
		Py_BEGIN_ALLOW_THREADS;
		SQLFreeStmt((SQLHSTMT)stmt_res->hstmt, SQL_CLOSE);
		Py_END_ALLOW_THREADS;
		
		_python_ibm_db_clear_stmt_err_cache();
		stmt_res->head_cache_list = NULL;
		stmt_res->current_node = NULL;

		/* Bind parameters */
		Py_BEGIN_ALLOW_THREADS;
		rc = SQLNumParams((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT*)&numOpts);
		Py_END_ALLOW_THREADS;
		
		data_type = (SQLSMALLINT*)ALLOC_N(SQLSMALLINT, numOpts);
		ref_data_type = (SQLSMALLINT*)ALLOC_N(SQLSMALLINT, numOpts);
		for ( i = 0; i < numOpts; i++) {
			ref_data_type[i] = -1;
		}
		if ( numOpts != 0 ) {
			for ( i = 0; i < numOpts; i++) {
				Py_BEGIN_ALLOW_THREADS;
				rc = SQLDescribeParam((SQLHSTMT)stmt_res->hstmt, i + 1,
					(SQLSMALLINT*)(data_type + i), &precision, (SQLSMALLINT*)&scale,
					(SQLSMALLINT*)&nullable);
				Py_END_ALLOW_THREADS;

				if ( rc == SQL_ERROR ) {
					_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT,
												rc, 1, NULL, -1, 1);
					PyErr_SetString(PyExc_Exception, IBM_DB_G(__python_stmt_err_msg));
					return NULL;
				}

				build_list(stmt_res, i + 1, data_type[i], precision, 
							  scale, nullable);
			}
		}

		/* Execute SQL for all set of parameters */
		numOfRows = PyTuple_Size(params);
		head_error_list = ALLOC(error_msg_node);
		memset(head_error_list, 0, sizeof(error_msg_node));
		head_error_list->next = NULL;
		if ( numOfRows > 0 ) {
			for ( i = 0; i < numOfRows; i++ ) {
				int j = 0;
				param_node *curr = NULL;
				PyObject *param = PyTuple_GET_ITEM(params, i);
				error[0] = '\0';
				if ( !PyTuple_Check(param) ) {
					sprintf(error, "Value parameter: %d is not a tuple", i + 1);
					_build_client_err_list(head_error_list, error);
					err_count++;
					continue;
				}
				
				numOfParam = PyTuple_Size(param);
				if ( numOpts < numOfParam ) {
					/* More are passed in -- Warning - Use the max number present */
					sprintf(error, "Value parameter tuple: %d has more no of param", i + 1);
					_build_client_err_list(head_error_list, error);
					err_count++;
					continue;
				} else if ( numOpts > numOfParam ) {
					/* If there are less params passed in, than are present 
					* -- Error 
					*/
					sprintf(error, "Value parameter tuple: %d has less no of param", i + 1);
					_build_client_err_list(head_error_list, error);
					err_count++;
					continue;
				}

				/* Bind values from the parameters_tuple to params */
				curr = stmt_res->head_cache_list;

				while ( curr != NULL ) {
					data = PyTuple_GET_ITEM(param, j);
					if ( data == NULL ) {
						sprintf(error, "NULL value passed for value parameter: %d", i + 1);
						_build_client_err_list(head_error_list, error);
						err_count++;
						break;
					}

					if ( chaining_start ) {
						if ( ( TYPE(data) != PYTHON_NIL ) && ( ref_data_type[curr->param_num - 1] != TYPE(data) ) ) {
							sprintf(error, "Value parameters array %d is not homogeneous with privious parameters array", i + 1);
							_build_client_err_list(head_error_list, error);
							err_count++;
							break;
						}
					} else {
						if ( TYPE(data) != PYTHON_NIL ) {
							ref_data_type[curr->param_num -1] = TYPE(data);
						} else {
							int i_tmp;
							PyObject *param_tmp = NULL;
							PyObject *data_tmp = NULL;
							i_tmp = i + 1;
							for ( i_tmp = i + 1; i_tmp < numOfRows; i_tmp++ ) {
								param_tmp = PyTuple_GET_ITEM(params, i_tmp);
								if ( !PyTuple_Check(param_tmp) ) {
									continue;
								}
								data_tmp = PyTuple_GET_ITEM(param_tmp, j);
								if ( TYPE(data_tmp) != PYTHON_NIL ) {
									ref_data_type[curr->param_num -1] = TYPE(data_tmp);
									break;
								} else {
									continue;
								}	
							}
							if ( ref_data_type[curr->param_num -1] == -1 ) {
								ref_data_type[curr->param_num -1] = PYTHON_NIL;
							}
						}
						
					}

					curr->data_type = data_type[curr->param_num - 1];
					if ( TYPE(data) != PYTHON_NIL ) {
						rc = _python_ibm_db_bind_data(stmt_res, curr, data);
					} else {
						SQLSMALLINT valueType = 0;
						switch( ref_data_type[curr->param_num -1] ) {
							case PYTHON_FIXNUM:
								if(curr->data_type == SQL_BIGINT || curr->data_type == SQL_DECIMAL ) {
									valueType = SQL_C_CHAR;
								} else {
									valueType = SQL_C_LONG;
								}
								break;
							case PYTHON_FALSE:
							case PYTHON_TRUE:
								valueType = SQL_C_LONG;
								break;
							case PYTHON_FLOAT:
								valueType = SQL_C_DOUBLE;
								break;
							case PYTHON_UNICODE:
								switch( curr->data_type ) {
									case SQL_BLOB:
									case SQL_BINARY:
#ifndef PASE /* i5/OS SQL_LONGVARBINARY is SQL_VARBINARY */
									case SQL_LONGVARBINARY:
#endif /* PASE */
									case SQL_VARBINARY:
										valueType = SQL_C_BINARY;
										break;
									default:
										valueType = SQL_C_WCHAR;
								}
								break;
							case PYTHON_STRING:
								switch( curr->data_type ) {
									case SQL_BLOB:
									case SQL_BINARY:
#ifndef PASE /* i5/OS SQL_LONGVARBINARY is SQL_VARBINARY */
									case SQL_LONGVARBINARY:
#endif /* PASE */
									case SQL_VARBINARY:
										valueType = SQL_C_BINARY;
										break;
									default:
										valueType = SQL_C_CHAR;
								}
								break;
							case PYTHON_DATE:
								valueType = SQL_C_TYPE_DATE;
								break;
							case PYTHON_TIME:
								valueType = SQL_C_TYPE_TIME;
								break;
							case PYTHON_TIMESTAMP:
								valueType = SQL_C_TYPE_TIMESTAMP;
								break;
							case PYTHON_DECIMAL:
								valueType = SQL_C_CHAR;
								break;
							case PYTHON_NIL:
								valueType = SQL_C_DEFAULT;
								break;
						}
						curr->ivalue = SQL_NULL_DATA;

						Py_BEGIN_ALLOW_THREADS;
						rc = SQLBindParameter(stmt_res->hstmt, curr->param_num, curr->param_type, valueType, curr->data_type, curr->param_size, curr->scale, &curr->ivalue, 0, (SQLLEN *)&(curr->ivalue));
						Py_END_ALLOW_THREADS;
						if ( rc == SQL_ERROR ) {
							_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
						}
					}	
					if ( rc != SQL_SUCCESS ) {
						sprintf(error, "Binding Error 1: %s", 
								IBM_DB_G(__python_stmt_err_msg));
						_build_client_err_list(head_error_list, error);
						err_count++;
						break;
					}
					curr = curr->next;
					j++;
				}

				if ( !chaining_start && ( error[0] == '\0' ) ) {
					/* Set statement attribute SQL_ATTR_CHAINING_BEGIN */
					rc = _ibm_db_chaining_flag(stmt_res, SQL_ATTR_CHAINING_BEGIN, NULL, 0);
					chaining_start = 1;
					if ( rc != SQL_SUCCESS ) {
						return NULL;
					}
				}

				if ( error[0] == '\0' ) {
					Py_BEGIN_ALLOW_THREADS;
					rc = SQLExecute((SQLHSTMT)stmt_res->hstmt);
					Py_END_ALLOW_THREADS;

					if ( rc == SQL_NEED_DATA ) {
						SQLPOINTER valuePtr;
						rc = SQLParamData((SQLHSTMT)stmt_res->hstmt, (SQLPOINTER *)&valuePtr);
						while ( rc == SQL_NEED_DATA ) {
							/* passing data value for a parameter */
							if ( !NIL_P(((param_node*)valuePtr)->svalue)) {
								Py_BEGIN_ALLOW_THREADS;
								rc = SQLPutData((SQLHSTMT)stmt_res->hstmt, (SQLPOINTER)(((param_node*)valuePtr)->svalue), ((param_node*)valuePtr)->ivalue);
								Py_END_ALLOW_THREADS;
							} else {
								Py_BEGIN_ALLOW_THREADS;
								rc = SQLPutData((SQLHSTMT)stmt_res->hstmt, (SQLPOINTER)(((param_node*)valuePtr)->uvalue), ((param_node*)valuePtr)->ivalue);
								Py_END_ALLOW_THREADS;
							}
							if ( rc == SQL_ERROR ) {
								_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
								sprintf(error, "Sending data failed: %s", IBM_DB_G(__python_stmt_err_msg));
								_build_client_err_list(head_error_list, error);
								err_count++;
								break;
							}
							rc = SQLParamData((SQLHSTMT)stmt_res->hstmt, (SQLPOINTER *)&valuePtr);
						}
					}
				}
			}
		} else {
			return PyInt_FromLong(0);
			
		}
		
		/* Set statement attribute SQL_ATTR_CHAINING_END */
		rc = _ibm_db_chaining_flag(stmt_res, SQL_ATTR_CHAINING_END, head_error_list->next, err_count);
		if ( head_error_list != NULL ) {
			error_msg_node *tmp_err = NULL;
			while ( head_error_list != NULL ) {
				tmp_err = head_error_list;
				head_error_list = head_error_list->next;
				PyMem_Del(tmp_err);
			}
		}
		if ( rc != SQL_SUCCESS || err_count != 0 ) {
			return NULL;
		}
	} else {
		PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
		return NULL;
	
	}

	Py_BEGIN_ALLOW_THREADS;
	rc = SQLRowCount((SQLHSTMT)stmt_res->hstmt, &row_cnt);
	Py_END_ALLOW_THREADS;
	
	if ( (rc == SQL_ERROR) && (stmt_res != NULL) ) {
		_python_ibm_db_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc,1, NULL, -1, 1);
		sprintf(error, "SQLRowCount failed: %s",IBM_DB_G(__python_stmt_err_msg));
		PyErr_SetString(PyExc_Exception, error);
		return NULL;
	}
	return PyInt_FromLong(row_cnt);
}

/*
 * ===Description
 *  ibm_db.callproc( conn_handle conn_res, char *procName, (In/INOUT/OUT parameters tuple) )
 *
 * Returns resultset and INOUT/OUT parameters
 * 
 * ===Parameters
 * =====  conn_handle
 *		a valid connection resource
 * ===== procedure Name
 *		a valide procedure Name
 *
 * ===== parameters tuple
 *		parameters tuple containing In/OUT/INOUT  variables, 
 *
 * ===Returns Values
 * ===== stmt_res
 *		statement resource containning result set
 *
 * ==== INOUT/OUT variables tuple
 *		tuple containing all INOUT/OUT variables
 * 
 * If procedure not found than it return NULL
 */
static PyObject* ibm_db_callproc(PyObject *self, PyObject *args){
	PyObject *py_conn_res = NULL;
	PyObject *parameters_tuple = NULL;
	PyObject *outTuple = NULL, *pyprocName = NULL, *data = NULL;
	conn_handle *conn_res = NULL;
	stmt_handle *stmt_res = NULL;
	param_node *tmp_curr = NULL;
	int numOfParam = 0;

	if (!PyArg_ParseTuple(args, "OO|O", &py_conn_res, &pyprocName, &parameters_tuple)) {
		return NULL;
	}
	
	if (!NIL_P(py_conn_res) && pyprocName != Py_None) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
		if (StringObj_Size(pyprocName) == 0) {
			PyErr_SetString(PyExc_Exception, "Empty Procedure Name");
			return NULL;
		}
		
		if (!NIL_P(parameters_tuple) ) {
			PyObject *subsql1 = NULL;
			PyObject *subsql2 = NULL;
			char *strsubsql = NULL;
			PyObject *sql = NULL;
			int i=0;
			if (!PyTuple_Check(parameters_tuple)) {
				PyErr_SetString(PyExc_Exception, "Param is not a tuple");
				return NULL;
			}
			numOfParam = PyTuple_Size(parameters_tuple);
			subsql1 = StringOBJ_FromASCII("CALL ");
			subsql2 = PyUnicode_Concat(subsql1, pyprocName);
			Py_XDECREF(subsql1);
			strsubsql = (char *)PyMem_Malloc(sizeof(char)*((strlen("(  )") + strlen(", ?")*numOfParam) + 2));
			if (strsubsql == NULL) {
				PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
				return NULL;
			}
			strsubsql[0] = '\0';
			strcat(strsubsql, "( ");
			for (i = 0; i < numOfParam; i++) {
				if (i == 0) {
					strcat(strsubsql, " ?");
				} else {
					strcat(strsubsql, ", ?");
				}	
			}
			strcat(strsubsql, " )");
			subsql1 = StringOBJ_FromASCII(strsubsql);
			sql = PyUnicode_Concat(subsql2, subsql1);
			Py_XDECREF(subsql1);
			Py_XDECREF(subsql2);
			stmt_res = (stmt_handle *)_python_ibm_db_prepare_helper(conn_res, sql, NULL);
			PyMem_Del(strsubsql);
			Py_XDECREF(sql);
			if(NIL_P(stmt_res)) {
				return NULL;
			}
			/* Bind values from the parameters_tuple to params */
			for (i = 0; i < numOfParam; i++ ) {	
				PyObject *bind_result = NULL;
				data = PyTuple_GET_ITEM(parameters_tuple, i);
				bind_result = _python_ibm_db_bind_param_helper(4, stmt_res, i+1, data, SQL_PARAM_INPUT_OUTPUT, 0, 0, 0, 0);
				if (NIL_P(bind_result)){
					return NULL;
				}
			}
		} else {
			PyObject *subsql1 = NULL;
			PyObject *subsql2 = NULL;
			PyObject *sql = NULL;
			subsql1 = StringOBJ_FromASCII("CALL ");
			subsql2 = PyUnicode_Concat(subsql1, pyprocName);
			Py_XDECREF(subsql1);
			subsql1 = StringOBJ_FromASCII("( )");
			sql = PyUnicode_Concat(subsql2, subsql1);
			Py_XDECREF(subsql1);
			Py_XDECREF(subsql2);
			stmt_res = (stmt_handle *)_python_ibm_db_prepare_helper(conn_res, sql, NULL);
			Py_XDECREF(sql);
			if(NIL_P(stmt_res)) {
				return NULL;
			}
		}
	
		if (!NIL_P(_python_ibm_db_execute_helper1(stmt_res, NULL))) {
			tmp_curr = stmt_res->head_cache_list;
			if(numOfParam != 0 && tmp_curr != NULL) {
				int paramCount = 1;
				outTuple = PyTuple_New(numOfParam + 1);
				PyTuple_SetItem(outTuple, 0, (PyObject*)stmt_res); 
				while(tmp_curr != NULL && (paramCount <= numOfParam)) {
					if ( (tmp_curr->bind_indicator != SQL_NULL_DATA && tmp_curr->bind_indicator != SQL_NO_TOTAL )) {
						switch (tmp_curr->data_type) {
							case SQL_SMALLINT:
							case SQL_INTEGER:
								PyTuple_SetItem(outTuple, paramCount, PyInt_FromLong(tmp_curr->ivalue));
								paramCount++;
								break;
							case SQL_REAL:
							case SQL_FLOAT:
							case SQL_DOUBLE:
								PyTuple_SetItem(outTuple, paramCount, PyFloat_FromDouble(tmp_curr->fvalue));
								paramCount++;
								break;
							case SQL_TYPE_DATE:
								PyTuple_SetItem(outTuple, paramCount, PyDate_FromDate(tmp_curr->date_value->year,
									tmp_curr->date_value->month, tmp_curr->date_value->day));
								paramCount++;
								break;
							case SQL_TYPE_TIME:
								PyTuple_SetItem(outTuple, paramCount, PyTime_FromTime(tmp_curr->time_value->hour,
									tmp_curr->time_value->minute, tmp_curr->time_value->second, 0));
								paramCount++;
								break;
							case SQL_TYPE_TIMESTAMP:
								PyTuple_SetItem(outTuple, paramCount, PyDateTime_FromDateAndTime(tmp_curr->ts_value->year,
									tmp_curr->ts_value->month, tmp_curr->ts_value->day, tmp_curr->ts_value->hour,
									tmp_curr->ts_value->minute, tmp_curr->ts_value->second, tmp_curr->ts_value->fraction / 1000));
								paramCount++;
								break;
							case SQL_BIGINT:
								PyTuple_SetItem(outTuple, paramCount, PyLong_FromString(tmp_curr->svalue, NULL, 0));
								paramCount++;
								break;
							default:
								if (!NIL_P(tmp_curr->svalue)) {
									PyTuple_SetItem(outTuple, paramCount, StringOBJ_FromASCII(tmp_curr->svalue));
									paramCount++;
								} else if (!NIL_P(tmp_curr->uvalue)) {
									PyTuple_SetItem(outTuple, paramCount, getSQLWCharAsPyUnicodeObject(tmp_curr->uvalue, tmp_curr->bind_indicator));
									paramCount++;
								} else {
									Py_INCREF(Py_None);
									PyTuple_SetItem(outTuple, paramCount, Py_None);
									paramCount++;
								}
								break;
						}
					} else {
						Py_INCREF(Py_None);
						PyTuple_SetItem(outTuple, paramCount, Py_None);
						paramCount++;
					}
					tmp_curr = tmp_curr->next;
				}
			} else {
				outTuple = (PyObject *)stmt_res;
			}
		} else {
			return NULL;
		}
		return outTuple;
	} else {
		PyErr_SetString(PyExc_Exception, "Connection Resource invalid or procedure name is NULL");
		return NULL;
	}
}


/*
 * ibm_db.check_function_support-- can be used to query whether a  DB2 CLI or ODBC function is supported
 * ===Description
 * int ibm_db.check_function_support(ConnectionHandle, FunctionId)
 * Returns Py_True if a DB2 CLI or ODBC function is supported
 * return Py_False if a DB2 CLI or ODBC function is not supported
 */
static PyObject* ibm_db_check_function_support(PyObject *self, PyObject *args)
{
	PyObject *py_conn_res = NULL;
	PyObject *py_funtion_id = NULL;
	int funtion_id = 0;
	conn_handle *conn_res = NULL;
	int supported = 0;
	int rc = 0;

	if (!PyArg_ParseTuple(args, "OO", &py_conn_res, &py_funtion_id)) {
		return NULL;
	}

	if (!NIL_P(py_conn_res)) {
		if (!PyObject_TypeCheck(py_conn_res, &conn_handleType)) {
			PyErr_SetString( PyExc_Exception, "Supplied connection object Parameter is invalid" );
			return NULL;
		} else {
			conn_res = (conn_handle *)py_conn_res;
		}
		if (!NIL_P(py_funtion_id)) {
			if (PyInt_Check(py_funtion_id)){
				funtion_id = (int) PyInt_AsLong(py_funtion_id);
			} else {
				PyErr_SetString(PyExc_Exception, "Supplied parameter is invalid");
				return NULL;
			}
		}
		/* Check to ensure the connection resource given is active */
		if (!conn_res->handle_active) {
			PyErr_SetString(PyExc_Exception, "Connection is not active");				
			return NULL;
		 }

		Py_BEGIN_ALLOW_THREADS;
		rc = SQLGetFunctions(conn_res->hdbc, (SQLUSMALLINT) funtion_id, (SQLUSMALLINT*) &supported);
		Py_END_ALLOW_THREADS;

		if (rc == SQL_ERROR) {
			Py_RETURN_FALSE;
		}
		else {
			if(supported == SQL_TRUE) {
				Py_RETURN_TRUE;
			}
			else {
				Py_RETURN_FALSE;
			}
		}
	
	}
	return NULL;
}

/*
 * ibm_db.get_last_serial_value --	Gets the last inserted serial value from IDS
 *
 * ===Description
 * string ibm_db.get_last_serial_value ( resource stmt )
 *
 * Returns a string, that is the last inserted value for a serial column for IDS. 
 * The last inserted value could be auto-generated or entered explicitly by the user
 * This function is valid for IDS (Informix Dynamic Server only)
 *
 * ===Parameters
 *
 * stmt
 *		A valid statement resource.
 *
 * ===Return Values
 *
 * Returns a string representation of last inserted serial value on a successful call. 
 * Returns FALSE on failure.
 */
/*
PyObject *ibm_db_get_last_serial_value(int argc, PyObject **argv, PyObject *self)
{
	PyObject *stmt = NULL;
	SQLCHAR *value = NULL;
	stmt_handle *stmt_res;
	int rc = 0;
	
	rb_scan_args(argc, argv, "1", &stmt);

	if (!NIL_P(stmt)) {
	  Data_Get_Struct(stmt, stmt_handle, stmt_res);

	  / * We allocate a buffer of size 31 as per recommendations from the CLI IDS team * /
	  value = ALLOC_N(char, 31);
	  if ( value == NULL ) {
		 PyErr_SetString(PyExc_Exception, "Failed to Allocate Memory");
		 return Py_False;
	  }

	  rc = SQLGetStmtAttr((SQLHSTMT)stmt_res->hstmt, SQL_ATTR_GET_GENERATED_VALUE, (SQLPOINTER)value, 31, NULL);
	  if ( rc == SQL_ERROR ) {
		 _python_ibm_db_check_sql_errors( (SQLHSTMT)stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1);
		 return Py_False;
	  }
	  return INT2NUM(atoi(value));
	}
	else {
	  PyErr_SetString(PyExc_Exception, "Supplied statement handle is invalid");
	  return Py_False;
	}
}
*/

static int _python_get_variable_type(PyObject *variable_value)
{
	if (PyBool_Check(variable_value) && (variable_value == Py_True)){
		return PYTHON_TRUE;
	}
	else if (PyBool_Check(variable_value) && (variable_value == Py_False)){
		return PYTHON_FALSE;
	}
	else if (PyInt_Check(variable_value) || PyLong_Check(variable_value)){
		return PYTHON_FIXNUM;
	}
	else if (PyFloat_Check(variable_value)){
		return PYTHON_FLOAT;
	}
	else if (PyUnicode_Check(variable_value)){
		return PYTHON_UNICODE;
	}
	else if (PyString_Check(variable_value) || PyBytes_Check(variable_value)){
		return PYTHON_STRING;
	}
	else if (PyDateTime_Check(variable_value)){
		return PYTHON_TIMESTAMP;
	}
	else if (PyTime_Check(variable_value)){
		return PYTHON_TIME;
	}
	else if (PyDate_Check(variable_value)){
		return PYTHON_DATE;
	}
	else if (PyComplex_Check(variable_value)){
		return PYTHON_COMPLEX;
	}
	else if (PyNumber_Check(variable_value)){
		return PYTHON_DECIMAL;
	}
	else if (variable_value == Py_None){
		return PYTHON_NIL;
	}
	else return 0;
}

/* Listing of ibm_db module functions: */
static PyMethodDef ibm_db_Methods[] = {
	/* name, function, argument type, docstring */
	{"connect", (PyCFunction)ibm_db_connect, METH_VARARGS | METH_KEYWORDS, "Connect to the database"},
	{"pconnect", (PyCFunction)ibm_db_pconnect, METH_VARARGS | METH_KEYWORDS, "Returns a persistent connection to a database"},
	{"exec_immediate", (PyCFunction)ibm_db_exec, METH_VARARGS, "Prepares and executes an SQL statement."},
	{"prepare", (PyCFunction)ibm_db_prepare, METH_VARARGS, "Prepares an SQL statement."},
	{"bind_param", (PyCFunction)ibm_db_bind_param, METH_VARARGS, "Binds a Python variable to an SQL statement parameter"},
	{"execute", (PyCFunction)ibm_db_execute, METH_VARARGS, "Executes an SQL statement that was prepared by ibm_db.prepare()"},
	{"fetch_tuple", (PyCFunction)ibm_db_fetch_array, METH_VARARGS, "Returns an tuple, indexed by column position, representing a row in a result set"},
	{"fetch_assoc", (PyCFunction)ibm_db_fetch_assoc, METH_VARARGS, "Returns a dictionary, indexed by column name, representing a row in a result set"},
	{"fetch_both", (PyCFunction)ibm_db_fetch_both, METH_VARARGS, "Returns a dictionary, indexed by both column name and position, representing a row in a result set"},
	{"fetch_row", (PyCFunction)ibm_db_fetch_row, METH_VARARGS, "Sets the result set pointer to the next row or requested row"},
	{"result", (PyCFunction)ibm_db_result, METH_VARARGS, "Returns a single column from a row in the result set"},
	{"active", (PyCFunction)ibm_db_active, METH_VARARGS, "Checks if the specified connection resource is active"},
	{"autocommit", (PyCFunction)ibm_db_autocommit, METH_VARARGS, "Returns or sets the AUTOCOMMIT state for a database connection"},
	{"callproc", (PyCFunction)ibm_db_callproc, METH_VARARGS, "Returns a tuple containing OUT/INOUT variable value"},
	{"check_function_support", (PyCFunction)ibm_db_check_function_support, METH_VARARGS, "return true if fuction is supported otherwise return false"},
	{"close", (PyCFunction)ibm_db_close, METH_VARARGS, "Close a database connection"},
	{"conn_error", (PyCFunction)ibm_db_conn_error, METH_VARARGS, "Returns a string containing the SQLSTATE returned by the last connection attempt"},
	{"conn_errormsg", (PyCFunction)ibm_db_conn_errormsg, METH_VARARGS, "Returns an error message and SQLCODE value representing the reason the last database connection attempt failed"},
	{"client_info", (PyCFunction)ibm_db_client_info, METH_VARARGS, "Returns a read-only object with information about the DB2 database client"},
	{"column_privileges", (PyCFunction)ibm_db_column_privileges, METH_VARARGS, "Returns a result set listing the columns and associated privileges for a table."},
	{"columns", (PyCFunction)ibm_db_columns, METH_VARARGS, "Returns a result set listing the columns and associated metadata for a table"},
	{"commit", (PyCFunction)ibm_db_commit, METH_VARARGS, "Commits a transaction"},
	{"createdb", (PyCFunction)ibm_db_createdb, METH_VARARGS, "Create db"},
	{"createdbNX", (PyCFunction)ibm_db_createdbNX, METH_VARARGS, "createdbNX" },
	{"cursor_type", (PyCFunction)ibm_db_cursor_type, METH_VARARGS, "Returns the cursor type used by a statement resource"},
	{"dropdb", (PyCFunction)ibm_db_dropdb, METH_VARARGS, "Drop db"},
	{"execute_many", (PyCFunction)ibm_db_execute_many, METH_VARARGS, "Execute SQL with multiple rows."},
	{"field_display_size", (PyCFunction)ibm_db_field_display_size, METH_VARARGS, "Returns the maximum number of bytes required to display a column"},
	{"field_name", (PyCFunction)ibm_db_field_name, METH_VARARGS, "Returns the name of the column in the result set"},
	{"field_nullable", (PyCFunction)ibm_db_field_nullable, METH_VARARGS, "Returns indicated column can contain nulls or not"},
	{"field_num", (PyCFunction)ibm_db_field_num, METH_VARARGS, "Returns the position of the named column in a result set"},
	{"field_precision", (PyCFunction)ibm_db_field_precision, METH_VARARGS, "Returns the precision of the indicated column in a result set"},
	{"field_scale", (PyCFunction)ibm_db_field_scale , METH_VARARGS, "Returns the scale of the indicated column in a result set"},
	{"field_type", (PyCFunction)ibm_db_field_type, METH_VARARGS, "Returns the data type of the indicated column in a result set"},
	{"field_width", (PyCFunction)ibm_db_field_width, METH_VARARGS, "Returns the width of the indicated column in a result set"},
	{"foreign_keys", (PyCFunction)ibm_db_foreign_keys, METH_VARARGS, "Returns a result set listing the foreign keys for a table"},
	{"free_result", (PyCFunction)ibm_db_free_result, METH_VARARGS, "Frees resources associated with a result set"},
	{"free_stmt", (PyCFunction)ibm_db_free_stmt, METH_VARARGS, "Frees resources associated with the indicated statement resource"},
	{"get_option", (PyCFunction)ibm_db_get_option, METH_VARARGS, "Gets the specified option in the resource."},
	{"next_result", (PyCFunction)ibm_db_next_result, METH_VARARGS, "Requests the next result set from a stored procedure"},
	{"num_fields", (PyCFunction)ibm_db_num_fields, METH_VARARGS, "Returns the number of fields contained in a result set"},
	{"num_rows", (PyCFunction)ibm_db_num_rows, METH_VARARGS, "Returns the number of rows affected by an SQL statement"},
	{"get_num_result", (PyCFunction)ibm_db_get_num_result, METH_VARARGS, "Returns the number of rows in a current open non-dynamic scrollable cursor"},
	{"primary_keys", (PyCFunction)ibm_db_primary_keys, METH_VARARGS, "Returns a result set listing primary keys for a table"},
	{"procedure_columns", (PyCFunction)ibm_db_procedure_columns, METH_VARARGS, "Returns a result set listing the parameters for one or more stored procedures."},
	{"procedures", (PyCFunction)ibm_db_procedures, METH_VARARGS, "Returns a result set listing the stored procedures registered in a database"},
	{"recreatedb", (PyCFunction)ibm_db_recreatedb, METH_VARARGS, "recreate db"},
	{"rollback", (PyCFunction)ibm_db_rollback, METH_VARARGS, "Rolls back a transaction"},
	{"server_info", (PyCFunction)ibm_db_server_info, METH_VARARGS, "Returns an object with properties that describe the DB2 database server"},
	{"get_db_info", (PyCFunction)ibm_db_get_db_info, METH_VARARGS, "Returns an object with properties that describe the DB2 database server according to the option passed"},
	{"set_option", (PyCFunction)ibm_db_set_option, METH_VARARGS, "Sets the specified option in the resource"},
	{"special_columns", (PyCFunction)ibm_db_special_columns, METH_VARARGS, "Returns a result set listing the unique row identifier columns for a table"},
	{"statistics", (PyCFunction)ibm_db_statistics, METH_VARARGS, "Returns a result set listing the index and statistics for a table"},
	{"stmt_error", (PyCFunction)ibm_db_stmt_error, METH_VARARGS, "Returns a string containing the SQLSTATE returned by an SQL statement"},
	{"stmt_errormsg", (PyCFunction)ibm_db_stmt_errormsg, METH_VARARGS, "Returns a string containing the last SQL statement error message"},
	{"table_privileges", (PyCFunction)ibm_db_table_privileges, METH_VARARGS, "Returns a result set listing the tables and associated privileges in a database"},
	{"tables", (PyCFunction)ibm_db_tables, METH_VARARGS, "Returns a result set listing the tables and associated metadata in a database"},	
	/* An end-of-listing sentinel: */ 
	{NULL, NULL, 0, NULL}
};
	
#ifndef PyMODINIT_FUNC	/* declarations for DLL import/export */
#define PyMODINIT_FUNC void
#endif

#if PY_MAJOR_VERSION >= 3
static struct PyModuleDef moduledef = {
		PyModuleDef_HEAD_INIT,
		"ibm_db",
		"IBM DataServer Driver for Python.",
		-1,
		ibm_db_Methods,
	};
#endif

/* Module initialization function */
PyMODINIT_FUNC
INIT_ibm_db(void) {
	PyObject* m;

	PyDateTime_IMPORT;
	ibm_db_globals = ALLOC(struct _ibm_db_globals);
	memset(ibm_db_globals, 0, sizeof(struct _ibm_db_globals));
	python_ibm_db_init_globals(ibm_db_globals);

	persistent_list = PyDict_New();

	conn_handleType.tp_new = PyType_GenericNew;
	if (PyType_Ready(&conn_handleType) < 0)
		return MOD_RETURN_ERROR;

	stmt_handleType.tp_new = PyType_GenericNew;
	if (PyType_Ready(&stmt_handleType) < 0)
		return MOD_RETURN_ERROR;

	client_infoType.tp_new = PyType_GenericNew;
	if (PyType_Ready(&client_infoType) < 0)
		return MOD_RETURN_ERROR;

	server_infoType.tp_new = PyType_GenericNew;
	if (PyType_Ready(&server_infoType) < 0)
		return MOD_RETURN_ERROR;

#if PY_MAJOR_VERSION < 3
	m = Py_InitModule3("ibm_db", ibm_db_Methods,  "IBM DataServer Driver for Python.");
#else
	m = PyModule_Create(&moduledef);
#endif

	Py_INCREF(&conn_handleType);
	PyModule_AddObject(m, "IBM_DBConnection", (PyObject *)&conn_handleType);

	PyModule_AddIntConstant(m, "SQL_AUTOCOMMIT_ON", SQL_AUTOCOMMIT_ON);
	PyModule_AddIntConstant(m, "SQL_AUTOCOMMIT_OFF", SQL_AUTOCOMMIT_OFF);
	PyModule_AddIntConstant(m, "SQL_ATTR_AUTOCOMMIT", SQL_ATTR_AUTOCOMMIT);
	PyModule_AddIntConstant(m, "ATTR_CASE", ATTR_CASE);
	PyModule_AddIntConstant(m, "CASE_NATURAL", CASE_NATURAL);
	PyModule_AddIntConstant(m, "CASE_LOWER", CASE_LOWER);
	PyModule_AddIntConstant(m, "CASE_UPPER", CASE_UPPER);
	PyModule_AddIntConstant(m, "SQL_ATTR_CURSOR_TYPE", SQL_ATTR_CURSOR_TYPE);
	PyModule_AddIntConstant(m, "SQL_CURSOR_FORWARD_ONLY", SQL_CURSOR_FORWARD_ONLY);
	PyModule_AddIntConstant(m, "SQL_CURSOR_KEYSET_DRIVEN", SQL_CURSOR_KEYSET_DRIVEN);
	PyModule_AddIntConstant(m, "SQL_CURSOR_DYNAMIC", SQL_CURSOR_DYNAMIC);
	PyModule_AddIntConstant(m, "SQL_CURSOR_STATIC", SQL_CURSOR_STATIC);
	PyModule_AddIntConstant(m, "SQL_PARAM_INPUT", SQL_PARAM_INPUT);
	PyModule_AddIntConstant(m, "SQL_PARAM_OUTPUT", SQL_PARAM_OUTPUT);
	PyModule_AddIntConstant(m, "SQL_PARAM_INPUT_OUTPUT", SQL_PARAM_INPUT_OUTPUT);
	PyModule_AddIntConstant(m, "PARAM_FILE", PARAM_FILE);

	PyModule_AddIntConstant(m, "SQL_BIGINT", SQL_BIGINT);
	PyModule_AddIntConstant(m, "SQL_BINARY", SQL_BINARY);
	PyModule_AddIntConstant(m, "SQL_BLOB", SQL_BLOB);
	PyModule_AddIntConstant(m, "SQL_BLOB_LOCATOR", SQL_BLOB_LOCATOR);
	PyModule_AddIntConstant(m, "SQL_CHAR", SQL_CHAR);
	PyModule_AddIntConstant(m, "SQL_TINYINT", SQL_TINYINT);
	PyModule_AddIntConstant(m, "SQL_BINARY", SQL_BINARY);
	PyModule_AddIntConstant(m, "SQL_BIT", SQL_BIT);
	PyModule_AddIntConstant(m, "SQL_CLOB", SQL_CLOB);
	PyModule_AddIntConstant(m, "SQL_CLOB_LOCATOR", SQL_CLOB_LOCATOR);
	PyModule_AddIntConstant(m, "SQL_TYPE_DATE", SQL_TYPE_DATE);
	PyModule_AddIntConstant(m, "SQL_DBCLOB", SQL_DBCLOB);
	PyModule_AddIntConstant(m, "SQL_DBCLOB_LOCATOR", SQL_DBCLOB_LOCATOR);
	PyModule_AddIntConstant(m, "SQL_DECIMAL", SQL_DECIMAL);
	PyModule_AddIntConstant(m, "SQL_DECFLOAT", SQL_DECFLOAT);
	PyModule_AddIntConstant(m, "SQL_DOUBLE", SQL_DOUBLE);
	PyModule_AddIntConstant(m, "SQL_FLOAT", SQL_FLOAT);
	PyModule_AddIntConstant(m, "SQL_GRAPHIC", SQL_GRAPHIC);
	PyModule_AddIntConstant(m, "SQL_INTEGER", SQL_INTEGER);
	PyModule_AddIntConstant(m, "SQL_LONGVARCHAR", SQL_LONGVARCHAR);
	PyModule_AddIntConstant(m, "SQL_LONGVARBINARY", SQL_LONGVARBINARY);
	PyModule_AddIntConstant(m, "SQL_LONGVARGRAPHIC", SQL_LONGVARGRAPHIC);
	PyModule_AddIntConstant(m, "SQL_WLONGVARCHAR", SQL_WLONGVARCHAR);
	PyModule_AddIntConstant(m, "SQL_NUMERIC", SQL_NUMERIC);
	PyModule_AddIntConstant(m, "SQL_REAL", SQL_REAL);
	PyModule_AddIntConstant(m, "SQL_SMALLINT", SQL_SMALLINT);
	PyModule_AddIntConstant(m, "SQL_TYPE_TIME", SQL_TYPE_TIME);
	PyModule_AddIntConstant(m, "SQL_TYPE_TIMESTAMP", SQL_TYPE_TIMESTAMP);
	PyModule_AddIntConstant(m, "SQL_VARBINARY", SQL_VARBINARY);
	PyModule_AddIntConstant(m, "SQL_VARCHAR", SQL_VARCHAR);
	PyModule_AddIntConstant(m, "SQL_VARBINARY", SQL_VARBINARY);
	PyModule_AddIntConstant(m, "SQL_VARGRAPHIC", SQL_VARGRAPHIC);
	PyModule_AddIntConstant(m, "SQL_WVARCHAR", SQL_WVARCHAR);
	PyModule_AddIntConstant(m, "SQL_WCHAR", SQL_WCHAR);
	PyModule_AddIntConstant(m, "SQL_XML", SQL_XML);
	PyModule_AddIntConstant(m, "SQL_FALSE", SQL_FALSE);
	PyModule_AddIntConstant(m, "SQL_TRUE", SQL_TRUE);
	PyModule_AddIntConstant(m, "SQL_TABLE_STAT", SQL_TABLE_STAT);
	PyModule_AddIntConstant(m, "SQL_INDEX_CLUSTERED", SQL_INDEX_CLUSTERED);
	PyModule_AddIntConstant(m, "SQL_INDEX_OTHER", SQL_INDEX_OTHER);
	PyModule_AddIntConstant(m, "SQL_ATTR_CURRENT_SCHEMA", SQL_ATTR_CURRENT_SCHEMA);
	PyModule_AddIntConstant(m, "SQL_ATTR_INFO_USERID", SQL_ATTR_INFO_USERID);
	PyModule_AddIntConstant(m, "SQL_ATTR_INFO_WRKSTNNAME", SQL_ATTR_INFO_WRKSTNNAME);
	PyModule_AddIntConstant(m, "SQL_ATTR_INFO_ACCTSTR", SQL_ATTR_INFO_ACCTSTR);
	PyModule_AddIntConstant(m, "SQL_ATTR_INFO_APPLNAME", SQL_ATTR_INFO_APPLNAME);
	PyModule_AddIntConstant(m, "SQL_ATTR_USE_TRUSTED_CONTEXT", SQL_ATTR_USE_TRUSTED_CONTEXT);
	PyModule_AddIntConstant(m, "SQL_ATTR_TRUSTED_CONTEXT_USERID", SQL_ATTR_TRUSTED_CONTEXT_USERID);
	PyModule_AddIntConstant(m, "SQL_ATTR_TRUSTED_CONTEXT_PASSWORD", SQL_ATTR_TRUSTED_CONTEXT_PASSWORD);
	PyModule_AddIntConstant(m, "SQL_DBMS_NAME", SQL_DBMS_NAME);
	PyModule_AddIntConstant(m, "SQL_DBMS_VER", SQL_DBMS_VER);
	PyModule_AddIntConstant(m, "SQL_ATTR_ROWCOUNT_PREFETCH", SQL_ATTR_ROWCOUNT_PREFETCH);
	PyModule_AddIntConstant(m, "SQL_ROWCOUNT_PREFETCH_ON", SQL_ROWCOUNT_PREFETCH_ON);
	PyModule_AddIntConstant(m, "SQL_ROWCOUNT_PREFETCH_OFF", SQL_ROWCOUNT_PREFETCH_OFF);
	PyModule_AddIntConstant(m, "SQL_API_SQLROWCOUNT", SQL_API_SQLROWCOUNT);
	PyModule_AddIntConstant(m, "QUOTED_LITERAL_REPLACEMENT_ON", SET_QUOTED_LITERAL_REPLACEMENT_ON);
	PyModule_AddIntConstant(m, "QUOTED_LITERAL_REPLACEMENT_OFF", SET_QUOTED_LITERAL_REPLACEMENT_OFF);
	PyModule_AddIntConstant(m, "SQL_ATTR_INFO_PROGRAMNAME", SQL_ATTR_INFO_PROGRAMNAME);
	PyModule_AddStringConstant(m, "__version__", MODULE_RELEASE);	

	Py_INCREF(&stmt_handleType);
	PyModule_AddObject(m, "IBM_DBStatement", (PyObject *)&stmt_handleType);

	Py_INCREF(&client_infoType);
	PyModule_AddObject(m, "IBM_DBClientInfo", (PyObject *)&client_infoType);

	Py_INCREF(&server_infoType);
	PyModule_AddObject(m, "IBM_DBServerInfo", (PyObject *)&server_infoType);
	return MOD_RETURN_VAL(m);
}
